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Wed, 19 Jun 2019 07:01:28 +0000 Received: from MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::84da:b4e7:4612:48b]) by MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::84da:b4e7:4612:48b%7]) with mapi id 15.20.1987.014; Wed, 19 Jun 2019 07:01:28 +0000 From: Anup Patel To: Rick Chen , Bin Meng , Lukas Auer , Simon Glass Thread-Topic: [PATCH v3 1/5] clk: sifive: Factor-out PLL library as separate module Thread-Index: AQHVJmzQXi1kS69c602PhsTQNgQohg== Date: Wed, 19 Jun 2019 07:01:28 +0000 Message-ID: <20190619070037.11730-2-anup.patel@wdc.com> References: <20190619070037.11730-1-anup.patel@wdc.com> In-Reply-To: <20190619070037.11730-1-anup.patel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MAXPR0101CA0065.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:e::27) To MN2PR04MB6061.namprd04.prod.outlook.com (2603:10b6:208:d8::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Anup.Patel@wdc.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [129.253.179.161] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 6109dd48-a11a-4202-baec-08d6f483f335 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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SRVR:MN2PR04MB5614; H:MN2PR04MB6061.namprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: kOJtV26pj/UL41CbjJAgHCRRLxyIevs++z6a+aiGljZAMC0GiAcMwTgAf7bawyKvw2KKE7mvrYsQstGgwmr4q9xO8raLDE7TrBxLdXFequE8klo5GuOBjcXJlWKvzZ9wAFThDFfWqS9qvg/xtK9HStYFwwMZf0jz5zgsM6UUPlvHv3lw8hJZxecbyBGCpDlJAAwMOR2u3iQ7uMG1uE6W+lAKJ/WG3v2PTSjMzYMiVqH5BHqOzvNBJf5IDy5Aq0BpPN9b8d65jA2e1QUltd15cjhZCg+KTNDtx8B56XMai8KkO8GRyi0MFswf7PEpBpn0SpJR/WentkF+kymAj+WxpKBc6nfCt3TI+bFxfJnUkf415Ge5y9uT6KSiIWT3wIEnIlshMEItVNNw+yOtbBGC2mcC73+ZiFUIsx4onjzvgvA= MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6109dd48-a11a-4202-baec-08d6f483f335 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Jun 2019 07:01:28.0400 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Anup.Patel@wdc.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5614 Cc: Palmer Dabbelt , U-Boot Mailing List Subject: [U-Boot] [PATCH v3 1/5] clk: sifive: Factor-out PLL library as separate module X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" To match SiFive clock driver with latest Linux, we factor-out PLL library as separate module under drivers/clk/analogbits. Signed-off-by: Anup Patel --- drivers/clk/Kconfig | 1 + drivers/clk/Makefile | 1 + drivers/clk/analogbits/Kconfig | 4 ++++ drivers/clk/analogbits/Makefile | 3 +++ drivers/clk/{sifive => analogbits}/wrpll-cln28hpc.c | 3 +-- drivers/clk/sifive/Kconfig | 3 --- drivers/clk/sifive/Makefile | 2 -- drivers/clk/sifive/fu540-prci.c | 3 +-- .../sifive => include/linux/clk}/analogbits-wrpll-cln28hpc.h | 0 9 files changed, 11 insertions(+), 9 deletions(-) create mode 100644 drivers/clk/analogbits/Kconfig create mode 100644 drivers/clk/analogbits/Makefile rename drivers/clk/{sifive => analogbits}/wrpll-cln28hpc.c (99%) rename {drivers/clk/sifive => include/linux/clk}/analogbits-wrpll-cln28hpc.h (100%) diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig index 96969b9e30..7b81eacf50 100644 --- a/drivers/clk/Kconfig +++ b/drivers/clk/Kconfig @@ -98,6 +98,7 @@ config CLK_STM32MP1 Enable the STM32 clock (RCC) driver. Enable support for manipulating STM32MP1's on-SoC clocks. +source "drivers/clk/analogbits/Kconfig" source "drivers/clk/at91/Kconfig" source "drivers/clk/exynos/Kconfig" source "drivers/clk/imx/Kconfig" diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index 719b9b8e02..f0ced49e5a 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_$(SPL_TPL_)CLK) += clk-uclass.o obj-$(CONFIG_$(SPL_TPL_)CLK) += clk_fixed_rate.o obj-$(CONFIG_$(SPL_TPL_)CLK) += clk_fixed_factor.o +obj-y += analogbits/ obj-y += imx/ obj-y += tegra/ obj-$(CONFIG_ARCH_ASPEED) += aspeed/ diff --git a/drivers/clk/analogbits/Kconfig b/drivers/clk/analogbits/Kconfig new file mode 100644 index 0000000000..1d25e6f124 --- /dev/null +++ b/drivers/clk/analogbits/Kconfig @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 + +config CLK_ANALOGBITS_WRPLL_CLN28HPC + bool diff --git a/drivers/clk/analogbits/Makefile b/drivers/clk/analogbits/Makefile new file mode 100644 index 0000000000..ec1bb4092b --- /dev/null +++ b/drivers/clk/analogbits/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0+ + +obj-$(CONFIG_CLK_ANALOGBITS_WRPLL_CLN28HPC) += wrpll-cln28hpc.o diff --git a/drivers/clk/sifive/wrpll-cln28hpc.c b/drivers/clk/analogbits/wrpll-cln28hpc.c similarity index 99% rename from drivers/clk/sifive/wrpll-cln28hpc.c rename to drivers/clk/analogbits/wrpll-cln28hpc.c index d377849693..68eb1148b9 100644 --- a/drivers/clk/sifive/wrpll-cln28hpc.c +++ b/drivers/clk/analogbits/wrpll-cln28hpc.c @@ -35,8 +35,7 @@ #include #include #include - -#include "analogbits-wrpll-cln28hpc.h" +#include /* MIN_INPUT_FREQ: minimum input clock frequency, in Hz (Fref_min) */ #define MIN_INPUT_FREQ 7000000 diff --git a/drivers/clk/sifive/Kconfig b/drivers/clk/sifive/Kconfig index 644881b948..d90be1943f 100644 --- a/drivers/clk/sifive/Kconfig +++ b/drivers/clk/sifive/Kconfig @@ -1,8 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -config CLK_ANALOGBITS_WRPLL_CLN28HPC - bool - config CLK_SIFIVE bool "SiFive SoC driver support" depends on CLK diff --git a/drivers/clk/sifive/Makefile b/drivers/clk/sifive/Makefile index f8263e79b7..0813360ca7 100644 --- a/drivers/clk/sifive/Makefile +++ b/drivers/clk/sifive/Makefile @@ -1,7 +1,5 @@ # SPDX-License-Identifier: GPL-2.0+ -obj-$(CONFIG_CLK_ANALOGBITS_WRPLL_CLN28HPC) += wrpll-cln28hpc.o - obj-$(CONFIG_CLK_SIFIVE_FU540_PRCI) += fu540-prci.o obj-$(CONFIG_CLK_SIFIVE_GEMGXL_MGMT) += gemgxl-mgmt.o diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index 2d47ebc6b1..56084db2e6 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -37,10 +37,9 @@ #include #include +#include #include -#include "analogbits-wrpll-cln28hpc.h" - /* * EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects: * hfclk and rtcclk diff --git a/drivers/clk/sifive/analogbits-wrpll-cln28hpc.h b/include/linux/clk/analogbits-wrpll-cln28hpc.h similarity index 100% rename from drivers/clk/sifive/analogbits-wrpll-cln28hpc.h rename to include/linux/clk/analogbits-wrpll-cln28hpc.h From patchwork Wed Jun 19 07:01:32 2019 Content-Type: text/plain; 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Wed, 19 Jun 2019 07:01:33 +0000 From: Anup Patel To: Rick Chen , Bin Meng , Lukas Auer , Simon Glass Thread-Topic: [PATCH v3 2/5] clk: sifive: Sync-up WRPLL library with upstream Linux Thread-Index: AQHVJmzT573gL6hMkUCilq8qDwCWNw== Date: Wed, 19 Jun 2019 07:01:32 +0000 Message-ID: <20190619070037.11730-3-anup.patel@wdc.com> References: <20190619070037.11730-1-anup.patel@wdc.com> In-Reply-To: <20190619070037.11730-1-anup.patel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MAXPR0101CA0065.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:e::27) To MN2PR04MB6061.namprd04.prod.outlook.com (2603:10b6:208:d8::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Anup.Patel@wdc.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [129.253.179.161] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 74f0c5f1-aa3f-4da8-4d16-08d6f483f5d0 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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Signed-off-by: Anup Patel --- drivers/clk/analogbits/wrpll-cln28hpc.c | 165 ++++++++---------- drivers/clk/sifive/fu540-prci.c | 26 +-- include/linux/clk/analogbits-wrpll-cln28hpc.h | 70 +++----- 3 files changed, 107 insertions(+), 154 deletions(-) diff --git a/drivers/clk/analogbits/wrpll-cln28hpc.c b/drivers/clk/analogbits/wrpll-cln28hpc.c index 68eb1148b9..776ead319a 100644 --- a/drivers/clk/analogbits/wrpll-cln28hpc.c +++ b/drivers/clk/analogbits/wrpll-cln28hpc.c @@ -1,20 +1,9 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) 2019 Western Digital Corporation or its affiliates. - * - * Copyright (C) 2018 SiFive, Inc. + * Copyright (C) 2018-2019 SiFive, Inc. * Wesley Terpstra * Paul Walmsley * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * * This library supports configuration parsing and reprogramming of * the CLN28HPC variant of the Analog Bits Wide Range PLL. The * intention is for this library to be reusable for any device that @@ -29,6 +18,7 @@ * References: * - Analog Bits "Wide Range PLL Datasheet", version 2015.10.01 * - SiFive FU540-C000 Manual v1p0, Chapter 7 "Clocking and Reset" + * https://static.dev.sifive.com/FU540-C000-v1.0.pdf */ #include @@ -84,40 +74,38 @@ * range selection. * * Return: The RANGE value to be presented to the PLL configuration inputs, - * or -1 upon error. + * or a negative return code upon error. */ static int __wrpll_calc_filter_range(unsigned long post_divr_freq) { - u8 range; - if (post_divr_freq < MIN_POST_DIVR_FREQ || post_divr_freq > MAX_POST_DIVR_FREQ) { WARN(1, "%s: post-divider reference freq out of range: %lu", __func__, post_divr_freq); - return -1; + return -ERANGE; } - if (post_divr_freq < 11000000) - range = 1; - else if (post_divr_freq < 18000000) - range = 2; - else if (post_divr_freq < 30000000) - range = 3; - else if (post_divr_freq < 50000000) - range = 4; - else if (post_divr_freq < 80000000) - range = 5; - else if (post_divr_freq < 130000000) - range = 6; - else - range = 7; - - return range; + switch (post_divr_freq) { + case 0 ... 10999999: + return 1; + case 11000000 ... 17999999: + return 2; + case 18000000 ... 29999999: + return 3; + case 30000000 ... 49999999: + return 4; + case 50000000 ... 79999999: + return 5; + case 80000000 ... 129999999: + return 6; + } + + return 7; } /** * __wrpll_calc_fbdiv() - return feedback fixed divide value - * @c: ptr to a struct analogbits_wrpll_cfg record to read from + * @c: ptr to a struct wrpll_cfg record to read from * * The internal feedback path includes a fixed by-two divider; the * external feedback path does not. Return the appropriate divider @@ -132,7 +120,7 @@ static int __wrpll_calc_filter_range(unsigned long post_divr_freq) * Return: 2 if internal feedback is enabled or 1 if external feedback * is enabled. */ -static u8 __wrpll_calc_fbdiv(struct analogbits_wrpll_cfg *c) +static u8 __wrpll_calc_fbdiv(const struct wrpll_cfg *c) { return (c->flags & WRPLL_FLAGS_INT_FEEDBACK_MASK) ? 2 : 1; } @@ -172,7 +160,7 @@ static u8 __wrpll_calc_divq(u32 target_rate, u64 *vco_rate) *vco_rate = MIN_VCO_FREQ; } else { divq = ilog2(s); - *vco_rate = target_rate << divq; + *vco_rate = (u64)target_rate << divq; } wcd_out: @@ -181,7 +169,7 @@ wcd_out: /** * __wrpll_update_parent_rate() - update PLL data when parent rate changes - * @c: ptr to a struct analogbits_wrpll_cfg record to write PLL data to + * @c: ptr to a struct wrpll_cfg record to write PLL data to * @parent_rate: PLL input refclk rate (pre-R-divider) * * Pre-compute some data used by the PLL configuration algorithm when @@ -189,46 +177,40 @@ wcd_out: * computation when the parent rate remains constant - expected to be * the common case. * - * Returns: 0 upon success or -1 if the reference clock rate is out of range. + * Returns: 0 upon success or -ERANGE if the reference clock rate is + * out of range. */ -static int __wrpll_update_parent_rate(struct analogbits_wrpll_cfg *c, +static int __wrpll_update_parent_rate(struct wrpll_cfg *c, unsigned long parent_rate) { u8 max_r_for_parent; if (parent_rate > MAX_INPUT_FREQ || parent_rate < MIN_POST_DIVR_FREQ) - return -1; + return -ERANGE; - c->_parent_rate = parent_rate; + c->parent_rate = parent_rate; max_r_for_parent = div_u64(parent_rate, MIN_POST_DIVR_FREQ); - c->_max_r = min_t(u8, MAX_DIVR_DIVISOR, max_r_for_parent); + c->max_r = min_t(u8, MAX_DIVR_DIVISOR, max_r_for_parent); - /* Round up */ - c->_init_r = div_u64(parent_rate + MAX_POST_DIVR_FREQ - 1, - MAX_POST_DIVR_FREQ); + c->init_r = DIV_ROUND_UP_ULL(parent_rate, MAX_POST_DIVR_FREQ); return 0; } -/* - * Public functions - */ - /** - * analogbits_wrpll_configure() - compute PLL configuration for a target rate - * @c: ptr to a struct analogbits_wrpll_cfg record to write into + * wrpll_configure() - compute PLL configuration for a target rate + * @c: ptr to a struct wrpll_cfg record to write into * @target_rate: target PLL output clock rate (post-Q-divider) * @parent_rate: PLL input refclk rate (pre-R-divider) * - * Given a pointer to a PLL context @c, a desired PLL target output - * rate @target_rate, and a reference clock input rate @parent_rate, - * compute the appropriate PLL signal configuration values. PLL - * reprogramming is not glitchless, so the caller should switch any - * downstream logic to a different clock source or clock-gate it - * before presenting these values to the PLL configuration signals. + * Compute the appropriate PLL signal configuration values and store + * in PLL context @c. PLL reprogramming is not glitchless, so the + * caller should switch any downstream logic to a different clock + * source or clock-gate it before presenting these values to the PLL + * configuration signals. * * The caller must pass this function a pre-initialized struct - * analogbits_wrpll_cfg record: either initialized to zero (with the + * wrpll_cfg record: either initialized to zero (with the * exception of the .name and .flags fields) or read from the PLL. * * Context: Any context. Caller must protect the memory pointed to by @c @@ -236,41 +218,26 @@ static int __wrpll_update_parent_rate(struct analogbits_wrpll_cfg *c, * * Return: 0 upon success; anything else upon failure. */ -int analogbits_wrpll_configure_for_rate(struct analogbits_wrpll_cfg *c, - u32 target_rate, - unsigned long parent_rate) +int wrpll_configure_for_rate(struct wrpll_cfg *c, u32 target_rate, + unsigned long parent_rate) { unsigned long ratio; u64 target_vco_rate, delta, best_delta, f_pre_div, vco, vco_pre; - u32 best_f, f, post_divr_freq, fbcfg; + u32 best_f, f, post_divr_freq; u8 fbdiv, divq, best_r, r; - - if (!c) - return -1; + int range; if (c->flags == 0) { WARN(1, "%s called with uninitialized PLL config", __func__); - return -1; - } - - fbcfg = WRPLL_FLAGS_INT_FEEDBACK_MASK | WRPLL_FLAGS_EXT_FEEDBACK_MASK; - if ((c->flags & fbcfg) == fbcfg) { - WARN(1, "%s called with invalid PLL config", __func__); - return -1; - } - - if (c->flags == WRPLL_FLAGS_EXT_FEEDBACK_MASK) { - WARN(1, "%s: external feedback mode not currently supported", - __func__); - return -1; + return -EINVAL; } /* Initialize rounding data if it hasn't been initialized already */ - if (parent_rate != c->_parent_rate) { + if (parent_rate != c->parent_rate) { if (__wrpll_update_parent_rate(c, parent_rate)) { pr_err("%s: PLL input rate is out of range\n", __func__); - return -1; + return -ERANGE; } } @@ -281,11 +248,12 @@ int analogbits_wrpll_configure_for_rate(struct analogbits_wrpll_cfg *c, c->flags |= WRPLL_FLAGS_BYPASS_MASK; return 0; } + c->flags &= ~WRPLL_FLAGS_BYPASS_MASK; /* Calculate the Q shift and target VCO rate */ divq = __wrpll_calc_divq(target_rate, &target_vco_rate); - if (divq == 0) + if (!divq) return -1; c->divq = divq; @@ -301,8 +269,7 @@ int analogbits_wrpll_configure_for_rate(struct analogbits_wrpll_cfg *c, * Consider all values for R which land within * [MIN_POST_DIVR_FREQ, MAX_POST_DIVR_FREQ]; prefer smaller R */ - for (r = c->_init_r; r <= c->_max_r; ++r) { - /* What is the best F we can pick in this case? */ + for (r = c->init_r; r <= c->max_r; ++r) { f_pre_div = ratio * r; f = (f_pre_div + (1 << ROUND_SHIFT)) >> ROUND_SHIFT; f >>= (fbdiv - 1); @@ -334,46 +301,54 @@ int analogbits_wrpll_configure_for_rate(struct analogbits_wrpll_cfg *c, post_divr_freq = div_u64(parent_rate, best_r); /* Pick the best PLL jitter filter */ - c->range = __wrpll_calc_filter_range(post_divr_freq); + range = __wrpll_calc_filter_range(post_divr_freq); + if (range < 0) + return range; + c->range = range; return 0; } /** - * analogbits_wrpll_calc_output_rate() - calculate the PLL's target output rate - * @c: ptr to a struct analogbits_wrpll_cfg record to read from + * wrpll_calc_output_rate() - calculate the PLL's target output rate + * @c: ptr to a struct wrpll_cfg record to read from * @parent_rate: PLL refclk rate * * Given a pointer to the PLL's current input configuration @c and the * PLL's input reference clock rate @parent_rate (before the R * pre-divider), calculate the PLL's output clock rate (after the Q - * post-divider) + * post-divider). * * Context: Any context. Caller must protect the memory pointed to by @c * from simultaneous modification. * - * Return: the PLL's output clock rate, in Hz. + * Return: the PLL's output clock rate, in Hz. The return value from + * this function is intended to be convenient to pass directly + * to the Linux clock framework; thus there is no explicit + * error return value. */ -unsigned long analogbits_wrpll_calc_output_rate(struct analogbits_wrpll_cfg *c, - unsigned long parent_rate) +unsigned long wrpll_calc_output_rate(const struct wrpll_cfg *c, + unsigned long parent_rate) { u8 fbdiv; u64 n; - WARN(c->flags & WRPLL_FLAGS_EXT_FEEDBACK_MASK, - "external feedback mode not yet supported"); + if (c->flags & WRPLL_FLAGS_EXT_FEEDBACK_MASK) { + WARN(1, "external feedback mode not yet supported"); + return ULONG_MAX; + } fbdiv = __wrpll_calc_fbdiv(c); n = parent_rate * fbdiv * (c->divf + 1); - n = div_u64(n, (c->divr + 1)); + n = div_u64(n, c->divr + 1); n >>= c->divq; return n; } /** - * analogbits_wrpll_calc_max_lock_us() - return the time for the PLL to lock - * @c: ptr to a struct analogbits_wrpll_cfg record to read from + * wrpll_calc_max_lock_us() - return the time for the PLL to lock + * @c: ptr to a struct wrpll_cfg record to read from * * Return the minimum amount of time (in microseconds) that the caller * must wait after reprogramming the PLL to ensure that it is locked @@ -383,7 +358,7 @@ unsigned long analogbits_wrpll_calc_output_rate(struct analogbits_wrpll_cfg *c, * Return: the minimum amount of time the caller must wait for the PLL * to lock (in microseconds) */ -unsigned int analogbits_wrpll_calc_max_lock_us(struct analogbits_wrpll_cfg *c) +unsigned int wrpll_calc_max_lock_us(const struct wrpll_cfg *c) { return MAX_LOCK_US; } diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index 56084db2e6..cdbf35e871 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -174,7 +174,7 @@ struct __prci_data { * bypass mux is not glitchless. */ struct __prci_wrpll_data { - struct analogbits_wrpll_cfg c; + struct wrpll_cfg c; void (*bypass)(struct __prci_data *pd); void (*no_bypass)(struct __prci_data *pd); u8 cfg0_offs; @@ -244,7 +244,7 @@ static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd) /** * __prci_wrpll_unpack() - unpack WRPLL configuration registers into parameters - * @c: ptr to a struct analogbits_wrpll_cfg record to write config into + * @c: ptr to a struct wrpll_cfg record to write config into * @r: value read from the PRCI PLL configuration register * * Given a value @r read from an FU540 PRCI PLL configuration register, @@ -256,7 +256,7 @@ static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd) * * Context: Any context. */ -static void __prci_wrpll_unpack(struct analogbits_wrpll_cfg *c, u32 r) +static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r) { u32 v; @@ -287,7 +287,7 @@ static void __prci_wrpll_unpack(struct analogbits_wrpll_cfg *c, u32 r) /** * __prci_wrpll_pack() - pack PLL configuration parameters into a register value - * @c: pointer to a struct analogbits_wrpll_cfg record containing the PLL's cfg + * @c: pointer to a struct wrpll_cfg record containing the PLL's cfg * * Using a set of WRPLL configuration values pointed to by @c, * assemble a PRCI PLL configuration register value, and return it to @@ -300,7 +300,7 @@ static void __prci_wrpll_unpack(struct analogbits_wrpll_cfg *c, u32 r) * Returns: a value suitable for writing into a PRCI PLL configuration * register */ -static u32 __prci_wrpll_pack(struct analogbits_wrpll_cfg *c) +static u32 __prci_wrpll_pack(struct wrpll_cfg *c) { u32 r = 0; @@ -348,11 +348,11 @@ static void __prci_wrpll_read_cfg(struct __prci_data *pd, */ static void __prci_wrpll_write_cfg(struct __prci_data *pd, struct __prci_wrpll_data *pwd, - struct analogbits_wrpll_cfg *c) + struct wrpll_cfg *c) { __prci_writel(__prci_wrpll_pack(c), pwd->cfg0_offs, pd); - memcpy(&pwd->c, c, sizeof(struct analogbits_wrpll_cfg)); + memcpy(&pwd->c, c, sizeof(struct wrpll_cfg)); } /* Core clock mux control */ @@ -403,7 +403,7 @@ static unsigned long sifive_fu540_prci_wrpll_recalc_rate( { struct __prci_wrpll_data *pwd = pc->pwd; - return analogbits_wrpll_calc_output_rate(&pwd->c, parent_rate); + return wrpll_calc_output_rate(&pwd->c, parent_rate); } static unsigned long sifive_fu540_prci_wrpll_round_rate( @@ -412,13 +412,13 @@ static unsigned long sifive_fu540_prci_wrpll_round_rate( unsigned long *parent_rate) { struct __prci_wrpll_data *pwd = pc->pwd; - struct analogbits_wrpll_cfg c; + struct wrpll_cfg c; memcpy(&c, &pwd->c, sizeof(c)); - analogbits_wrpll_configure_for_rate(&c, rate, *parent_rate); + wrpll_configure_for_rate(&c, rate, *parent_rate); - return analogbits_wrpll_calc_output_rate(&c, *parent_rate); + return wrpll_calc_output_rate(&c, *parent_rate); } static int sifive_fu540_prci_wrpll_set_rate(struct __prci_clock *pc, @@ -429,7 +429,7 @@ static int sifive_fu540_prci_wrpll_set_rate(struct __prci_clock *pc, struct __prci_data *pd = pc->pd; int r; - r = analogbits_wrpll_configure_for_rate(&pwd->c, rate, parent_rate); + r = wrpll_configure_for_rate(&pwd->c, rate, parent_rate); if (r) return -ERANGE; @@ -438,7 +438,7 @@ static int sifive_fu540_prci_wrpll_set_rate(struct __prci_clock *pc, __prci_wrpll_write_cfg(pd, pwd, &pwd->c); - udelay(analogbits_wrpll_calc_max_lock_us(&pwd->c)); + udelay(wrpll_calc_max_lock_us(&pwd->c)); if (pwd->no_bypass) pwd->no_bypass(pd); diff --git a/include/linux/clk/analogbits-wrpll-cln28hpc.h b/include/linux/clk/analogbits-wrpll-cln28hpc.h index 4432e24749..03279097e1 100644 --- a/include/linux/clk/analogbits-wrpll-cln28hpc.h +++ b/include/linux/clk/analogbits-wrpll-cln28hpc.h @@ -1,19 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Copyright (c) 2019 Western Digital Corporation or its affiliates. - * - * Copyright (C) 2018 SiFive, Inc. + * Copyright (C) 2018-2019 SiFive, Inc. * Wesley Terpstra * Paul Walmsley - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #ifndef __LINUX_CLK_ANALOGBITS_WRPLL_CLN28HPC_H @@ -25,7 +14,7 @@ #define DIVQ_VALUES 6 /* - * Bit definitions for struct analogbits_wrpll_cfg.flags + * Bit definitions for struct wrpll_cfg.flags * * WRPLL_FLAGS_BYPASS_FLAG: if set, the PLL is either in bypass, or should be * programmed to enter bypass @@ -34,10 +23,6 @@ * feedback mode * WRPLL_FLAGS_EXT_FEEDBACK_FLAG: if set, the PLL is configured for external * feedback mode (not yet supported by this driver) - * - * The flags WRPLL_FLAGS_INT_FEEDBACK_FLAG and WRPLL_FLAGS_EXT_FEEDBACK_FLAG are - * mutually exclusive. If both bits are set, or both are zero, the struct - * analogbits_wrpll_cfg record is uninitialized or corrupt. */ #define WRPLL_FLAGS_BYPASS_SHIFT 0 #define WRPLL_FLAGS_BYPASS_MASK BIT(WRPLL_FLAGS_BYPASS_SHIFT) @@ -49,53 +34,46 @@ #define WRPLL_FLAGS_EXT_FEEDBACK_MASK BIT(WRPLL_FLAGS_EXT_FEEDBACK_SHIFT) /** - * struct analogbits_wrpll_cfg - WRPLL configuration values - * @divr: reference divider value (6 bits), as presented to the PLL signals. - * @divf: feedback divider value (9 bits), as presented to the PLL signals. - * @divq: output divider value (3 bits), as presented to the PLL signals. - * @flags: PLL configuration flags. See above for more information. - * @range: PLL loop filter range. See below for more information. - * @_output_rate_cache: cached output rates, swept across DIVQ. - * @_parent_rate: PLL refclk rate for which values are valid - * @_max_r: maximum possible R divider value, given @parent_rate - * @_init_r: initial R divider value to start the search from + * struct wrpll_cfg - WRPLL configuration values + * @divr: reference divider value (6 bits), as presented to the PLL signals + * @divf: feedback divider value (9 bits), as presented to the PLL signals + * @divq: output divider value (3 bits), as presented to the PLL signals + * @flags: PLL configuration flags. See above for more information + * @range: PLL loop filter range. See below for more information + * @output_rate_cache: cached output rates, swept across DIVQ + * @parent_rate: PLL refclk rate for which values are valid + * @max_r: maximum possible R divider value, given @parent_rate + * @init_r: initial R divider value to start the search from * * @divr, @divq, @divq, @range represent what the PLL expects to see * on its input signals. Thus @divr and @divf are the actual divisors * minus one. @divq is a power-of-two divider; for example, 1 = * divide-by-2 and 6 = divide-by-64. 0 is an invalid @divq value. * - * When initially passing a struct analogbits_wrpll_cfg record, the + * When initially passing a struct wrpll_cfg record, the * record should be zero-initialized with the exception of the @flags * field. The only flag bits that need to be set are either * WRPLL_FLAGS_INT_FEEDBACK or WRPLL_FLAGS_EXT_FEEDBACK. - * - * Field names beginning with an underscore should be considered - * private to the wrpll-cln28hpc.c code. */ -struct analogbits_wrpll_cfg { +struct wrpll_cfg { u8 divr; u8 divq; u8 range; u8 flags; u16 divf; - u32 _output_rate_cache[DIVQ_VALUES]; - unsigned long _parent_rate; - u8 _max_r; - u8 _init_r; +/* private: */ + u32 output_rate_cache[DIVQ_VALUES]; + unsigned long parent_rate; + u8 max_r; + u8 init_r; }; -/* - * Function prototypes - */ - -int analogbits_wrpll_configure_for_rate(struct analogbits_wrpll_cfg *c, - u32 target_rate, - unsigned long parent_rate); +int wrpll_configure_for_rate(struct wrpll_cfg *c, u32 target_rate, + unsigned long parent_rate); -unsigned int analogbits_wrpll_calc_max_lock_us(struct analogbits_wrpll_cfg *c); +unsigned int wrpll_calc_max_lock_us(const struct wrpll_cfg *c); -unsigned long analogbits_wrpll_calc_output_rate(struct analogbits_wrpll_cfg *c, - unsigned long parent_rate); +unsigned long wrpll_calc_output_rate(const struct wrpll_cfg *c, + unsigned long parent_rate); #endif /* __LINUX_CLK_ANALOGBITS_WRPLL_CLN28HPC_H */ From patchwork Wed Jun 19 07:01:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 1118497 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=wdc.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=wdc.com header.i=@wdc.com header.b="CXZxbzDo"; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.b="Vj08+Hvx"; 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DIR:OUT; SFP:1102; SCL:1; SRVR:MN2PR04MB5614; H:MN2PR04MB6061.namprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: zc2olEbEvnk/2Mxau71mH+BXPCbAdhO7eUCaHmBJpVkcrU/0ib2QZNAjqqi9kSorHWRmzaNQLSy3Yo/R70tosRWonTR5UNeFAe1eC2aGTv+ROLZM2U59xikaB2FrjVLr7uYPuxny8rVzOtm5DcdaDgJpFOnd4e6qJPxOI5xBvMs9upAHMovMsJdUzMy+XEmVdql1nfp26Ss3ojVP5n+bc5YLKUaQIkhDGq6tAFzF4l+6bkNZ1rgQaqcV03OPzoxbnGX03vxnYoCxH6nrbFwotYsC+VL15oPXzV9TJ3rPotsjJd2IaMEc7Na7Xjj7RG9yhPuYaVER+mUJVjHaFm1U2U/ouabPX256k6AM5JNGO4cLC6q1HFDYgauYUUSZcxWupbvfHPVj3S9Yd0fVS1mY3mhACogL85dkKnVliWBsfX4= MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8e9e98bc-4d36-4f09-b6c2-08d6f483f8b9 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Jun 2019 07:01:37.4035 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Anup.Patel@wdc.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5614 Cc: Palmer Dabbelt , U-Boot Mailing List Subject: [U-Boot] [PATCH v3 3/5] clk: sifive: Sync-up DT bindings header with upstream Linux X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" The location and license header of DT bindings header for SiFive clock driver has changed in upstream Linux hence this patch. Signed-off-by: Anup Patel --- drivers/clk/sifive/fu540-prci.c | 2 +- include/dt-bindings/clk/sifive-fu540-prci.h | 29 ------------------- include/dt-bindings/clock/sifive-fu540-prci.h | 18 ++++++++++++ 3 files changed, 19 insertions(+), 30 deletions(-) delete mode 100644 include/dt-bindings/clk/sifive-fu540-prci.h create mode 100644 include/dt-bindings/clock/sifive-fu540-prci.h diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index cdbf35e871..ceb318e062 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -38,7 +38,7 @@ #include #include -#include +#include /* * EXPECTED_CLK_PARENT_COUNT: how many parent clocks this driver expects: diff --git a/include/dt-bindings/clk/sifive-fu540-prci.h b/include/dt-bindings/clk/sifive-fu540-prci.h deleted file mode 100644 index 531523ea62..0000000000 --- a/include/dt-bindings/clk/sifive-fu540-prci.h +++ /dev/null @@ -1,29 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * Copyright (c) 2019 Western Digital Corporation or its affiliates. - * - * Copyright (C) 2018 SiFive, Inc. - * Wesley Terpstra - * Paul Walmsley - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#ifndef __LINUX_CLK_SIFIVE_FU540_PRCI_H -#define __LINUX_CLK_SIFIVE_FU540_PRCI_H - -/* Clock indexes for use by Device Tree data */ - -#define PRCI_CLK_COREPLL 0 -#define PRCI_CLK_DDRPLL 1 -#define PRCI_CLK_GEMGXLPLL 2 -#define PRCI_CLK_TLCLK 3 - -#endif diff --git a/include/dt-bindings/clock/sifive-fu540-prci.h b/include/dt-bindings/clock/sifive-fu540-prci.h new file mode 100644 index 0000000000..6a0b70a37d --- /dev/null +++ b/include/dt-bindings/clock/sifive-fu540-prci.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2018-2019 SiFive, Inc. + * Wesley Terpstra + * Paul Walmsley + */ + +#ifndef __DT_BINDINGS_CLOCK_SIFIVE_FU540_PRCI_H +#define __DT_BINDINGS_CLOCK_SIFIVE_FU540_PRCI_H + +/* Clock indexes for use by Device Tree data and the PRCI driver */ + +#define PRCI_CLK_COREPLL 0 +#define PRCI_CLK_DDRPLL 1 +#define PRCI_CLK_GEMGXLPLL 2 +#define PRCI_CLK_TLCLK 3 + +#endif From patchwork Wed Jun 19 07:01:41 2019 Content-Type: text/plain; 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Wed, 19 Jun 2019 07:01:42 +0000 From: Anup Patel To: Rick Chen , Bin Meng , Lukas Auer , Simon Glass Thread-Topic: [PATCH v3 4/5] clk: sifive: Sync-up main driver with upstream Linux Thread-Index: AQHVJmzZRAZVoSdIq06TuBp1Zw8P/w== Date: Wed, 19 Jun 2019 07:01:41 +0000 Message-ID: <20190619070037.11730-5-anup.patel@wdc.com> References: <20190619070037.11730-1-anup.patel@wdc.com> In-Reply-To: <20190619070037.11730-1-anup.patel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MAXPR0101CA0065.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:e::27) To MN2PR04MB6061.namprd04.prod.outlook.com (2603:10b6:208:d8::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Anup.Patel@wdc.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [129.253.179.161] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f2fa2756-035b-447f-16f9-08d6f483fb73 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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As-per latest DT bindings, the clock driver takes two parent clocks and compatible string has also changed. This patch sync-up SiFive clock driver implementation as-per upstream Linux so that we now use latest DT bindings. Signed-off-by: Anup Patel --- drivers/clk/sifive/fu540-prci.c | 96 ++++++++++++++++++++------------- 1 file changed, 60 insertions(+), 36 deletions(-) diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index ceb318e062..ce0769f2d1 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -158,30 +158,32 @@ * PRCI per-device instance data */ struct __prci_data { - void *base; - struct clk parent; + void *va; + struct clk parent_hfclk; + struct clk parent_rtcclk; }; /** * struct __prci_wrpll_data - WRPLL configuration and integration data * @c: WRPLL current configuration record - * @bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL) - * @no_bypass: fn ptr to code to not bypass the WRPLL (if applicable; else NULL) + * @enable_bypass: fn ptr to code to bypass the WRPLL (if applicable; else NULL) + * @disable_bypass: fn ptr to code to not bypass the WRPLL (or NULL) * @cfg0_offs: WRPLL CFG0 register offset (in bytes) from the PRCI base address * - * @bypass and @no_bypass are used for WRPLL instances that contain a separate - * external glitchless clock mux downstream from the PLL. The WRPLL internal - * bypass mux is not glitchless. + * @enable_bypass and @disable_bypass are used for WRPLL instances + * that contain a separate external glitchless clock mux downstream + * from the PLL. The WRPLL internal bypass mux is not glitchless. */ struct __prci_wrpll_data { struct wrpll_cfg c; - void (*bypass)(struct __prci_data *pd); - void (*no_bypass)(struct __prci_data *pd); + void (*enable_bypass)(struct __prci_data *pd); + void (*disable_bypass)(struct __prci_data *pd); u8 cfg0_offs; }; struct __prci_clock; +/* struct __prci_clock_ops - clock operations */ struct __prci_clock_ops { int (*set_rate)(struct __prci_clock *pc, unsigned long rate, @@ -197,8 +199,7 @@ struct __prci_clock_ops { * struct __prci_clock - describes a clock device managed by PRCI * @name: user-readable clock name string - should match the manual * @parent_name: parent name for this clock - * @ops: struct clk_ops for the Linux clock framework to use for control - * @hw: Linux-private clock data + * @ops: struct __prci_clock_ops for control * @pwd: WRPLL-specific data, associated with this clock (if not NULL) * @pd: PRCI-specific data associated with this clock (if not NULL) * @@ -232,12 +233,12 @@ struct __prci_clock { */ static u32 __prci_readl(struct __prci_data *pd, u32 offs) { - return readl(pd->base + offs); + return readl(pd->va + offs); } static void __prci_writel(u32 v, u32 offs, struct __prci_data *pd) { - return writel(v, pd->base + offs); + writel(v, pd->va + offs); } /* WRPLL-related private functions */ @@ -279,10 +280,8 @@ static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r) c->flags &= (WRPLL_FLAGS_INT_FEEDBACK_MASK | WRPLL_FLAGS_EXT_FEEDBACK_MASK); - if (r & PRCI_COREPLLCFG0_FSE_MASK) - c->flags |= WRPLL_FLAGS_INT_FEEDBACK_MASK; - else - c->flags |= WRPLL_FLAGS_EXT_FEEDBACK_MASK; + /* external feedback mode not supported */ + c->flags |= WRPLL_FLAGS_INT_FEEDBACK_MASK; } /** @@ -300,7 +299,7 @@ static void __prci_wrpll_unpack(struct wrpll_cfg *c, u32 r) * Returns: a value suitable for writing into a PRCI PLL configuration * register */ -static u32 __prci_wrpll_pack(struct wrpll_cfg *c) +static u32 __prci_wrpll_pack(const struct wrpll_cfg *c) { u32 r = 0; @@ -308,8 +307,9 @@ static u32 __prci_wrpll_pack(struct wrpll_cfg *c) r |= c->divf << PRCI_COREPLLCFG0_DIVF_SHIFT; r |= c->divq << PRCI_COREPLLCFG0_DIVQ_SHIFT; r |= c->range << PRCI_COREPLLCFG0_RANGE_SHIFT; - if (c->flags & WRPLL_FLAGS_INT_FEEDBACK_MASK) - r |= PRCI_COREPLLCFG0_FSE_MASK; + + /* external feedback mode not supported */ + r |= PRCI_COREPLLCFG0_FSE_MASK; return r; } @@ -352,7 +352,7 @@ static void __prci_wrpll_write_cfg(struct __prci_data *pd, { __prci_writel(__prci_wrpll_pack(c), pwd->cfg0_offs, pd); - memcpy(&pwd->c, c, sizeof(struct wrpll_cfg)); + memcpy(&pwd->c, c, sizeof(*c)); } /* Core clock mux control */ @@ -431,17 +431,17 @@ static int sifive_fu540_prci_wrpll_set_rate(struct __prci_clock *pc, r = wrpll_configure_for_rate(&pwd->c, rate, parent_rate); if (r) - return -ERANGE; + return r; - if (pwd->bypass) - pwd->bypass(pd); + if (pwd->enable_bypass) + pwd->enable_bypass(pd); __prci_wrpll_write_cfg(pd, pwd, &pwd->c); udelay(wrpll_calc_max_lock_us(&pwd->c)); - if (pwd->no_bypass) - pwd->no_bypass(pd); + if (pwd->disable_bypass) + pwd->disable_bypass(pd); return 0; } @@ -483,8 +483,8 @@ static const struct __prci_clock_ops sifive_fu540_prci_tlclksel_clk_ops = { static struct __prci_wrpll_data __prci_corepll_data = { .cfg0_offs = PRCI_COREPLLCFG0_OFFSET, - .bypass = __prci_coreclksel_use_hfclk, - .no_bypass = __prci_coreclksel_use_corepll, + .enable_bypass = __prci_coreclksel_use_hfclk, + .disable_bypass = __prci_coreclksel_use_corepll, }; static struct __prci_wrpll_data __prci_ddrpll_data = { @@ -525,6 +525,27 @@ static struct __prci_clock __prci_init_clocks[] = { }, }; +static ulong sifive_fu540_prci_parent_rate(struct __prci_clock *pc) +{ + ulong parent_rate; + struct __prci_clock *p; + + if (strcmp(pc->parent_name, "corepll") == 0) { + p = &__prci_init_clocks[PRCI_CLK_COREPLL]; + if (!p->pd || !p->ops->recalc_rate) + return -ENXIO; + + return p->ops->recalc_rate(p, sifive_fu540_prci_parent_rate(p)); + } + + if (strcmp(pc->parent_name, "rtcclk") == 0) + parent_rate = clk_get_rate(&pc->pd->parent_rtcclk); + else + parent_rate = clk_get_rate(&pc->pd->parent_hfclk); + + return parent_rate; +} + static ulong sifive_fu540_prci_get_rate(struct clk *clk) { struct __prci_clock *pc; @@ -536,7 +557,7 @@ static ulong sifive_fu540_prci_get_rate(struct clk *clk) if (!pc->pd || !pc->ops->recalc_rate) return -ENXIO; - return pc->ops->recalc_rate(pc, clk_get_rate(&pc->pd->parent)); + return pc->ops->recalc_rate(pc, sifive_fu540_prci_parent_rate(pc)); } static ulong sifive_fu540_prci_set_rate(struct clk *clk, ulong rate) @@ -551,7 +572,7 @@ static ulong sifive_fu540_prci_set_rate(struct clk *clk, ulong rate) if (!pc->pd || !pc->ops->set_rate) return -ENXIO; - err = pc->ops->set_rate(pc, rate, clk_get_rate(&pc->pd->parent)); + err = pc->ops->set_rate(pc, rate, sifive_fu540_prci_parent_rate(pc)); if (err) return err; @@ -564,11 +585,15 @@ static int sifive_fu540_prci_probe(struct udevice *dev) struct __prci_clock *pc; struct __prci_data *pd = dev_get_priv(dev); - pd->base = (void *)dev_read_addr(dev); - if (IS_ERR(pd->base)) - return PTR_ERR(pd->base); + pd->va = (void *)dev_read_addr(dev); + if (IS_ERR(pd->va)) + return PTR_ERR(pd->va); + + err = clk_get_by_index(dev, 0, &pd->parent_hfclk); + if (err) + return err; - err = clk_get_by_index(dev, 0, &pd->parent); + err = clk_get_by_index(dev, 1, &pd->parent_rtcclk); if (err) return err; @@ -588,8 +613,7 @@ static struct clk_ops sifive_fu540_prci_ops = { }; static const struct udevice_id sifive_fu540_prci_ids[] = { - { .compatible = "sifive,fu540-c000-prci0" }, - { .compatible = "sifive,aloeprci0" }, + { .compatible = "sifive,fu540-c000-prci" }, { } }; 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Wed, 19 Jun 2019 07:01:46 +0000 Received: from MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::84da:b4e7:4612:48b]) by MN2PR04MB6061.namprd04.prod.outlook.com ([fe80::84da:b4e7:4612:48b%7]) with mapi id 15.20.1987.014; Wed, 19 Jun 2019 07:01:46 +0000 From: Anup Patel To: Rick Chen , Bin Meng , Lukas Auer , Simon Glass Thread-Topic: [PATCH v3 5/5] clk: sifive: Drop GEMGXL clock driver Thread-Index: AQHVJmzbdI9lfZpBkUmarbS/ilvZ8g== Date: Wed, 19 Jun 2019 07:01:46 +0000 Message-ID: <20190619070037.11730-6-anup.patel@wdc.com> References: <20190619070037.11730-1-anup.patel@wdc.com> In-Reply-To: <20190619070037.11730-1-anup.patel@wdc.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MAXPR0101CA0065.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00:e::27) To MN2PR04MB6061.namprd04.prod.outlook.com (2603:10b6:208:d8::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Anup.Patel@wdc.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [129.253.179.161] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c3dbe202-c2b5-428e-e691-08d6f483fe40 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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There is no separate GEMGXL clock driver in upstream Linux kernel hence we drop GEMGXL clock driver from U-Boot as well. Signed-off-by: Anup Patel Reviewed-by: Bin Meng --- board/sifive/fu540/Kconfig | 1 - drivers/clk/sifive/Kconfig | 7 ---- drivers/clk/sifive/Makefile | 2 -- drivers/clk/sifive/gemgxl-mgmt.c | 60 -------------------------------- 4 files changed, 70 deletions(-) delete mode 100644 drivers/clk/sifive/gemgxl-mgmt.c diff --git a/board/sifive/fu540/Kconfig b/board/sifive/fu540/Kconfig index 8eb5e304ab..f46437901d 100644 --- a/board/sifive/fu540/Kconfig +++ b/board/sifive/fu540/Kconfig @@ -28,7 +28,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy imply CMD_PING imply CLK_SIFIVE imply CLK_SIFIVE_FU540_PRCI - imply CLK_SIFIVE_GEMGXL_MGMT imply DOS_PARTITION imply EFI_PARTITION imply IP_DYN diff --git a/drivers/clk/sifive/Kconfig b/drivers/clk/sifive/Kconfig index d90be1943f..c4d0a1f9b1 100644 --- a/drivers/clk/sifive/Kconfig +++ b/drivers/clk/sifive/Kconfig @@ -14,10 +14,3 @@ config CLK_SIFIVE_FU540_PRCI Supports the Power Reset Clock interface (PRCI) IP block found in FU540 SoCs. If this kernel is meant to run on a SiFive FU540 SoC, enable this driver. - -config CLK_SIFIVE_GEMGXL_MGMT - bool "GEMGXL management for SiFive FU540 SoCs" - depends on CLK_SIFIVE - help - Supports the GEMGXL management IP block found in FU540 SoCs to - control GEM TX clock operation mode for 10/100/1000 Mbps. diff --git a/drivers/clk/sifive/Makefile b/drivers/clk/sifive/Makefile index 0813360ca7..b224279afb 100644 --- a/drivers/clk/sifive/Makefile +++ b/drivers/clk/sifive/Makefile @@ -1,5 +1,3 @@ # SPDX-License-Identifier: GPL-2.0+ obj-$(CONFIG_CLK_SIFIVE_FU540_PRCI) += fu540-prci.o - -obj-$(CONFIG_CLK_SIFIVE_GEMGXL_MGMT) += gemgxl-mgmt.o diff --git a/drivers/clk/sifive/gemgxl-mgmt.c b/drivers/clk/sifive/gemgxl-mgmt.c deleted file mode 100644 index eb37416b5e..0000000000 --- a/drivers/clk/sifive/gemgxl-mgmt.c +++ /dev/null @@ -1,60 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2019, Bin Meng - */ - -#include -#include -#include -#include - -struct gemgxl_mgmt_regs { - __u32 tx_clk_sel; -}; - -struct gemgxl_mgmt_platdata { - struct gemgxl_mgmt_regs *regs; -}; - -static int gemgxl_mgmt_ofdata_to_platdata(struct udevice *dev) -{ - struct gemgxl_mgmt_platdata *plat = dev_get_platdata(dev); - - plat->regs = (struct gemgxl_mgmt_regs *)dev_read_addr(dev); - - return 0; -} - -static ulong gemgxl_mgmt_set_rate(struct clk *clk, ulong rate) -{ - struct gemgxl_mgmt_platdata *plat = dev_get_platdata(clk->dev); - - /* - * GEMGXL TX clock operation mode: - * - * 0 = GMII mode. Use 125 MHz gemgxlclk from PRCI in TX logic - * and output clock on GMII output signal GTX_CLK - * 1 = MII mode. Use MII input signal TX_CLK in TX logic - */ - writel(rate != 125000000, &plat->regs->tx_clk_sel); - - return 0; -} - -const struct clk_ops gemgxl_mgmt_ops = { - .set_rate = gemgxl_mgmt_set_rate, -}; - -static const struct udevice_id gemgxl_mgmt_match[] = { - { .compatible = "sifive,cadencegemgxlmgmt0", }, - { /* sentinel */ } -}; - -U_BOOT_DRIVER(sifive_gemgxl_mgmt) = { - .name = "sifive-gemgxl-mgmt", - .id = UCLASS_CLK, - .of_match = gemgxl_mgmt_match, - .ofdata_to_platdata = gemgxl_mgmt_ofdata_to_platdata, - .platdata_auto_alloc_size = sizeof(struct gemgxl_mgmt_platdata), - .ops = &gemgxl_mgmt_ops, -};