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Mon, 22 Jun 2020 12:28:11 +0000 From: Sagar Shrikant Kadam To: u-boot@lists.denx.de Cc: rick@andestech.com, paul.walmsley@sifive.com, palmer@dabbelt.com, anup.patel@wdc.com, atish.patra@wdc.com, lukma@denx.de, pragnesh.patel@sifive.com, jagan@amarulasolutions.com, bmeng.cn@gmail.com, sjg@chromium.org, twoerner@gmail.com, patrick@blueri.se, festevam@gmail.com, weijie.gao@mediatek.com, Eugeniy.Paltsev@synopsys.com, Sagar Shrikant Kadam Subject: [PATCH 1/5] dt-bindings: prci: add indexes for reset signals available in prci Date: Mon, 22 Jun 2020 05:27:52 -0700 Message-Id: <1592828876-7724-2-git-send-email-sagar.kadam@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> References: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> X-ClientProxiedBy: BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) To BN8PR13MB2611.namprd13.prod.outlook.com (2603:10b6:408:81::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from gamma07.internal.sifive.com (64.62.193.194) by BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3153.2 via Frontend Transport; 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The DDR and ethernet sub-system's have reset signals indicated by these reset indexes. Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Pragnesh Patel Reviewed-by: Bin Meng --- include/dt-bindings/clock/sifive-fu540-prci.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/dt-bindings/clock/sifive-fu540-prci.h b/include/dt-bindings/clock/sifive-fu540-prci.h index 6a0b70a..1c03b09 100644 --- a/include/dt-bindings/clock/sifive-fu540-prci.h +++ b/include/dt-bindings/clock/sifive-fu540-prci.h @@ -15,4 +15,12 @@ #define PRCI_CLK_GEMGXLPLL 2 #define PRCI_CLK_TLCLK 3 +/* Reset bit indexes to be used by driver */ +#define PRCI_RST_DDR_CTRL_N 0 +#define PRCI_RST_DDR_AXI_N 1 +#define PRCI_RST_DDR_AHB_N 2 +#define PRCI_RST_DDR_PHY_N 3 +/* bit 4 is reserved bit */ +#define PRCI_RST_RSVD_N 4 +#define PRCI_RST_GEMGXL_N 5 #endif From patchwork Mon Jun 22 12:27:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sagar Shrikant Kadam X-Patchwork-Id: 1314339 X-Patchwork-Delegate: uboot@andestech.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; 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Mon, 22 Jun 2020 12:28:14 +0000 From: Sagar Shrikant Kadam To: u-boot@lists.denx.de Cc: rick@andestech.com, paul.walmsley@sifive.com, palmer@dabbelt.com, anup.patel@wdc.com, atish.patra@wdc.com, lukma@denx.de, pragnesh.patel@sifive.com, jagan@amarulasolutions.com, bmeng.cn@gmail.com, sjg@chromium.org, twoerner@gmail.com, patrick@blueri.se, festevam@gmail.com, weijie.gao@mediatek.com, Eugeniy.Paltsev@synopsys.com, Sagar Shrikant Kadam Subject: [PATCH 2/5] fu540: prci: use common reset indexes defined in binding header Date: Mon, 22 Jun 2020 05:27:53 -0700 Message-Id: <1592828876-7724-3-git-send-email-sagar.kadam@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> References: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> X-ClientProxiedBy: BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) To BN8PR13MB2611.namprd13.prod.outlook.com (2603:10b6:408:81::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from gamma07.internal.sifive.com (64.62.193.194) by BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3153.2 via Frontend Transport; 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So use those instead of defining new ones again within the fu540-prci driver. Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Pragnesh Patel [A Reviewed-by: Bin Meng --- drivers/clk/sifive/fu540-prci.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index fe6e0d4..57d811e 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -131,21 +131,17 @@ /* DEVICESRESETREG */ #define PRCI_DEVICESRESETREG_OFFSET 0x28 -#define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT 0 + #define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK \ - (0x1 << PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_SHIFT) -#define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT 1 + (0x1 << PRCI_RST_DDR_CTRL_N) #define PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK \ - (0x1 << PRCI_DEVICESRESETREG_DDR_AXI_RST_N_SHIFT) -#define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT 2 + (0x1 << PRCI_RST_DDR_AXI_N) #define PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK \ - (0x1 << PRCI_DEVICESRESETREG_DDR_AHB_RST_N_SHIFT) -#define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT 3 + (0x1 << PRCI_RST_DDR_AHB_N) #define PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK \ - (0x1 << PRCI_DEVICESRESETREG_DDR_PHY_RST_N_SHIFT) -#define PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT 5 + (0x1 << PRCI_RST_DDR_PHY_N) #define PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK \ - (0x1 << PRCI_DEVICESRESETREG_GEMGXL_RST_N_SHIFT) + (0x1 << PRCI_RST_GEMGXL_N) /* CLKMUXSTATUSREG */ #define PRCI_CLKMUXSTATUSREG_OFFSET 0x2c From patchwork Mon Jun 22 12:27:54 2020 Content-Type: text/plain; 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Mon, 22 Jun 2020 12:28:17 +0000 From: Sagar Shrikant Kadam To: u-boot@lists.denx.de Cc: rick@andestech.com, paul.walmsley@sifive.com, palmer@dabbelt.com, anup.patel@wdc.com, atish.patra@wdc.com, lukma@denx.de, pragnesh.patel@sifive.com, jagan@amarulasolutions.com, bmeng.cn@gmail.com, sjg@chromium.org, twoerner@gmail.com, patrick@blueri.se, festevam@gmail.com, weijie.gao@mediatek.com, Eugeniy.Paltsev@synopsys.com, Sagar Shrikant Kadam Subject: [PATCH 3/5] fu540: dtsi: add reset producer and consumer entries Date: Mon, 22 Jun 2020 05:27:54 -0700 Message-Id: <1592828876-7724-4-git-send-email-sagar.kadam@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> References: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> X-ClientProxiedBy: BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) To BN8PR13MB2611.namprd13.prod.outlook.com (2603:10b6:408:81::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from gamma07.internal.sifive.com (64.62.193.194) by BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3153.2 via Frontend Transport; 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Add these reset producer and consumer details needed by the reset driver. Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Pragnesh Patel Reviewed-by: Bin Meng --- arch/riscv/dts/fu540-c000-u-boot.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/riscv/dts/fu540-c000-u-boot.dtsi b/arch/riscv/dts/fu540-c000-u-boot.dtsi index 9bba554..b37241e 100644 --- a/arch/riscv/dts/fu540-c000-u-boot.dtsi +++ b/arch/riscv/dts/fu540-c000-u-boot.dtsi @@ -59,6 +59,16 @@ reg = <0x0 0x2000000 0x0 0xc0000>; u-boot,dm-spl; }; + prci: clock-controller@10000000 { + #reset-cells = <1>; + resets = <&prci PRCI_RST_DDR_CTRL_N>, + <&prci PRCI_RST_DDR_AXI_N>, + <&prci PRCI_RST_DDR_AHB_N>, + <&prci PRCI_RST_DDR_PHY_N>, + <&prci PRCI_RST_GEMGXL_N>; + reset-names = "ddr_ctrl", "ddr_axi", "ddr_ahb", + "ddr_phy", "gemgxl_reset"; + }; dmc: dmc@100b0000 { compatible = "sifive,fu540-c000-ddr"; reg = <0x0 0x100b0000 0x0 0x0800 From patchwork Mon Jun 22 12:27:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sagar Shrikant Kadam X-Patchwork-Id: 1314341 X-Patchwork-Delegate: uboot@andestech.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; 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Mon, 22 Jun 2020 12:28:20 +0000 From: Sagar Shrikant Kadam To: u-boot@lists.denx.de Cc: rick@andestech.com, paul.walmsley@sifive.com, palmer@dabbelt.com, anup.patel@wdc.com, atish.patra@wdc.com, lukma@denx.de, pragnesh.patel@sifive.com, jagan@amarulasolutions.com, bmeng.cn@gmail.com, sjg@chromium.org, twoerner@gmail.com, patrick@blueri.se, festevam@gmail.com, weijie.gao@mediatek.com, Eugeniy.Paltsev@synopsys.com, Sagar Shrikant Kadam Subject: [PATCH 4/5] sifive: reset: add DM based reset driver for SiFive SoC's Date: Mon, 22 Jun 2020 05:27:55 -0700 Message-Id: <1592828876-7724-5-git-send-email-sagar.kadam@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> References: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> X-ClientProxiedBy: BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) To BN8PR13MB2611.namprd13.prod.outlook.com (2603:10b6:408:81::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from gamma07.internal.sifive.com (64.62.193.194) by BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3153.2 via Frontend Transport; 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The resets to DDR and ethernet sub systems within FU540-C000 SoC are active low, and are hold low by default on power-up. Currently these are directly asserted within prci driver via register read/write. With the DM based reset driver support here, we bind the reset driver with clock (prci) driver and assert the reset signals of both sub-system's appropriately. Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Pragnesh Patel Reviewed-by: Bin Meng Tested-by: Bin Meng --- arch/riscv/include/asm/arch-fu540/reset.h | 13 ++++ drivers/clk/sifive/fu540-prci.c | 73 ++++++++++++++---- drivers/reset/reset-sifive.c | 118 ++++++++++++++++++++++++++++++ 3 files changed, 189 insertions(+), 15 deletions(-) create mode 100644 arch/riscv/include/asm/arch-fu540/reset.h create mode 100644 drivers/reset/reset-sifive.c diff --git a/arch/riscv/include/asm/arch-fu540/reset.h b/arch/riscv/include/asm/arch-fu540/reset.h new file mode 100644 index 0000000..e42797a --- /dev/null +++ b/arch/riscv/include/asm/arch-fu540/reset.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2020 SiFive, Inc. + * + * Author: Sagar Kadam + */ + +#ifndef __RESET_SIFIVE_H +#define __RESET_SIFIVE_H + +int sifive_reset_bind(struct udevice *dev, ulong count); + +#endif diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index 57d811e..675b508 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -30,11 +30,15 @@ #include #include +#include #include #include #include #include #include +#include +#include +#include #include #include @@ -131,6 +135,7 @@ /* DEVICESRESETREG */ #define PRCI_DEVICESRESETREG_OFFSET 0x28 +#define PRCI_DEVICERESETCNT 5 #define PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK \ (0x1 << PRCI_RST_DDR_CTRL_N) @@ -524,6 +529,41 @@ static const struct __prci_clock_ops sifive_fu540_prci_tlclksel_clk_ops = { .recalc_rate = sifive_fu540_prci_tlclksel_recalc_rate, }; +static int __prci_consumer_reset(const char *rst_name, bool trigger) +{ + struct udevice *dev; + struct reset_ctl rst_sig; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_RESET, + DM_GET_DRIVER(sifive_reset), + &dev); + if (ret) { + dev_err(dev, "Reset driver not found: %d\n", ret); + return ret; + } + + ret = reset_get_by_name(dev, rst_name, &rst_sig); + if (ret) { + dev_err(dev, "failed to get %s reset\n", rst_name); + return ret; + } + + if (reset_valid(&rst_sig)) { + if (trigger) + ret = reset_deassert(&rst_sig); + else + ret = reset_assert(&rst_sig); + if (ret) { + dev_err(dev, "failed to trigger reset id = %ld\n", + rst_sig.id); + return ret; + } + } + + return ret; +} + /** * __prci_ddr_release_reset() - Release DDR reset * @pd: struct __prci_data * for the PRCI containing the DDRCLK mux reg @@ -531,19 +571,20 @@ static const struct __prci_clock_ops sifive_fu540_prci_tlclksel_clk_ops = { */ static void __prci_ddr_release_reset(struct __prci_data *pd) { - u32 v; - - v = __prci_readl(pd, PRCI_DEVICESRESETREG_OFFSET); - v |= PRCI_DEVICESRESETREG_DDR_CTRL_RST_N_MASK; - __prci_writel(v, PRCI_DEVICESRESETREG_OFFSET, pd); + /* Release DDR ctrl reset */ + __prci_consumer_reset("ddr_ctrl", true); /* HACK to get the '1 full controller clock cycle'. */ asm volatile ("fence"); - v = __prci_readl(pd, PRCI_DEVICESRESETREG_OFFSET); - v |= (PRCI_DEVICESRESETREG_DDR_AXI_RST_N_MASK | - PRCI_DEVICESRESETREG_DDR_AHB_RST_N_MASK | - PRCI_DEVICESRESETREG_DDR_PHY_RST_N_MASK); - __prci_writel(v, PRCI_DEVICESRESETREG_OFFSET, pd); + + /* Release DDR AXI reset */ + __prci_consumer_reset("ddr_axi", true); + + /* Release DDR AHB reset */ + __prci_consumer_reset("ddr_ahb", true); + + /* Release DDR PHY reset */ + __prci_consumer_reset("ddr_phy", true); /* HACK to get the '1 full controller clock cycle'. */ asm volatile ("fence"); @@ -563,12 +604,8 @@ static void __prci_ddr_release_reset(struct __prci_data *pd) */ static void __prci_ethernet_release_reset(struct __prci_data *pd) { - u32 v; - /* Release GEMGXL reset */ - v = __prci_readl(pd, PRCI_DEVICESRESETREG_OFFSET); - v |= PRCI_DEVICESRESETREG_GEMGXL_RST_N_MASK; - __prci_writel(v, PRCI_DEVICESRESETREG_OFFSET, pd); + __prci_consumer_reset("gemgxl_reset", true); /* Procmon => core clock */ __prci_writel(PRCI_PROCMONCFG_CORE_CLOCK_MASK, PRCI_PROCMONCFG_OFFSET, @@ -753,6 +790,11 @@ static struct clk_ops sifive_fu540_prci_ops = { .disable = sifive_fu540_prci_disable, }; +static int sifive_fu540_clk_bind(struct udevice *dev) +{ + return sifive_reset_bind(dev, PRCI_DEVICERESETCNT); +} + static const struct udevice_id sifive_fu540_prci_ids[] = { { .compatible = "sifive,fu540-c000-prci" }, { } @@ -765,4 +807,5 @@ U_BOOT_DRIVER(sifive_fu540_prci) = { .probe = sifive_fu540_prci_probe, .ops = &sifive_fu540_prci_ops, .priv_auto_alloc_size = sizeof(struct __prci_data), + .bind = sifive_fu540_clk_bind, }; diff --git a/drivers/reset/reset-sifive.c b/drivers/reset/reset-sifive.c new file mode 100644 index 0000000..527757f --- /dev/null +++ b/drivers/reset/reset-sifive.c @@ -0,0 +1,118 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2020 Sifive, Inc. + * Author: Sagar Kadam + */ + +#include +#include +#include +#include +#include +#include +#include + +#define PRCI_RESETREG_OFFSET 0x28 + +struct sifive_reset_priv { + void *base; + /* number of reset signals */ + int nr_reset; +}; + +static int sifive_rst_trigger(struct reset_ctl *rst, bool level) +{ + struct sifive_reset_priv *priv = dev_get_priv(rst->dev); + int id = rst->id; + int regval = readl(priv->base + PRCI_RESETREG_OFFSET); + + /* Derive bitposition from rst id */ + if (level) + /* Reset deassert */ + regval |= BIT(id); + else + /* Reset assert */ + regval &= ~BIT(id); + + writel(regval, priv->base + PRCI_RESETREG_OFFSET); + + return 0; +} + +static int sifive_reset_assert(struct reset_ctl *rst) +{ + return sifive_rst_trigger(rst, false); +} + +static int sifive_reset_deassert(struct reset_ctl *rst) +{ + return sifive_rst_trigger(rst, true); +} + +static int sifive_reset_request(struct reset_ctl *rst) +{ + struct sifive_reset_priv *priv = dev_get_priv(rst->dev); + + debug("%s(rst=%p) (dev=%p, id=%lu) (nr_reset=%d)\n", __func__, + rst, rst->dev, rst->id, priv->nr_reset); + + if (rst->id > priv->nr_reset) + return -EINVAL; + + return 0; +} + +static int sifive_reset_free(struct reset_ctl *rst) +{ + struct sifive_reset_priv *priv = dev_get_priv(rst->dev); + + debug("%s(rst=%p) (dev=%p, id=%lu) (nr_reset=%d)\n", __func__, + rst, rst->dev, rst->id, priv->nr_reset); + + return 0; +} + +static int sifive_reset_probe(struct udevice *dev) +{ + struct sifive_reset_priv *priv = dev_get_priv(dev); + + priv->base = dev_remap_addr(dev); + if (!priv->base) + return -ENOMEM; + + return 0; +} + +int sifive_reset_bind(struct udevice *dev, ulong count) +{ + struct udevice *rst_dev; + struct sifive_reset_priv *priv; + int ret; + + ret = device_bind_driver_to_node(dev, "sifive-reset", "reset", + dev_ofnode(dev), &rst_dev); + if (ret) { + dev_err(dev, "failed to bind sifive_reset driver (ret=%d)\n", ret); + return ret; + } + priv = malloc(sizeof(struct sifive_reset_priv)); + priv->nr_reset = count; + rst_dev->priv = priv; + + return 0; +} + +const struct reset_ops sifive_reset_ops = { + .request = sifive_reset_request, + .rfree = sifive_reset_free, + .rst_assert = sifive_reset_assert, + .rst_deassert = sifive_reset_deassert, +}; + +U_BOOT_DRIVER(sifive_reset) = { + .name = "sifive-reset", + .id = UCLASS_RESET, + .ops = &sifive_reset_ops, + .probe = sifive_reset_probe, + .priv_auto_alloc_size = sizeof(struct sifive_reset_priv), +}; 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Mon, 22 Jun 2020 12:28:23 +0000 From: Sagar Shrikant Kadam To: u-boot@lists.denx.de Cc: rick@andestech.com, paul.walmsley@sifive.com, palmer@dabbelt.com, anup.patel@wdc.com, atish.patra@wdc.com, lukma@denx.de, pragnesh.patel@sifive.com, jagan@amarulasolutions.com, bmeng.cn@gmail.com, sjg@chromium.org, twoerner@gmail.com, patrick@blueri.se, festevam@gmail.com, weijie.gao@mediatek.com, Eugeniy.Paltsev@synopsys.com, Sagar Shrikant Kadam Subject: [PATCH 5/5] configs: reset: fu540: enable dm reset framework for SiFive SoC Date: Mon, 22 Jun 2020 05:27:56 -0700 Message-Id: <1592828876-7724-6-git-send-email-sagar.kadam@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> References: <1592828876-7724-1-git-send-email-sagar.kadam@sifive.com> X-ClientProxiedBy: BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) To BN8PR13MB2611.namprd13.prod.outlook.com (2603:10b6:408:81::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from gamma07.internal.sifive.com (64.62.193.194) by BYAPR21CA0011.namprd21.prod.outlook.com (2603:10b6:a03:114::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3153.2 via Frontend Transport; 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Signed-off-by: Sagar Shrikant Kadam Reviewed-by: Pragnesh Patel Reviewed-by: Bin Meng Tested-by: Bin Meng --- configs/sifive_fu540_defconfig | 2 ++ drivers/reset/Kconfig | 9 +++++++++ drivers/reset/Makefile | 1 + 3 files changed, 12 insertions(+) diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig index 8d412f8..6d78943 100644 --- a/configs/sifive_fu540_defconfig +++ b/configs/sifive_fu540_defconfig @@ -21,3 +21,5 @@ CONFIG_DEFAULT_DEVICE_TREE="hifive-unleashed-a00" CONFIG_SYS_RELOC_GD_ENV_ADDR=y CONFIG_SPL_CLK=y CONFIG_DM_MTD=y +CONFIG_SPL_DM_RESET=y +CONFIG_DM_RESET=y diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index 88d3be1..627f8e8 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -148,4 +148,13 @@ config RESET_IMX7 help Support for reset controller on i.MX7/8 SoCs. +config RESET_SIFIVE + bool "Reset Driver for SiFive SoC's" + depends on DM_RESET && CLK_SIFIVE_FU540_PRCI && TARGET_SIFIVE_FU540 + default y + help + PRCI module within SiFive SoC's provides mechanism to reset + different hw blocks like DDR, gemgxl. With this driver we leverage + U-Boot's reset framework to reset these hardware blocks. + endmenu diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index 0a044d5..e3c27c4 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -23,3 +23,4 @@ obj-$(CONFIG_RESET_MTMIPS) += reset-mtmips.o obj-$(CONFIG_RESET_SUNXI) += reset-sunxi.o obj-$(CONFIG_RESET_HISILICON) += reset-hisilicon.o obj-$(CONFIG_RESET_IMX7) += reset-imx7.o +obj-$(CONFIG_RESET_SIFIVE) += reset-sifive.o