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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727793568; bh=pOVGf9oma8m/uk8UYl/aTmt4jeyftpA7nP589qoLT7Q=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=azLtOqza2RsFH72pKRXUfDUdr093pWX+Ua9djz+yImGD1xY+L92K0yi26DEi0Tnzo HLUOT8gELyn3U3r82k0ac9AeEwEd4QKeSaIq6B9FQpi6J7U/HI4hL8gor/QfhGypOX 8bBv0+w2GxOOVL64TBYyowpkPISriZcV4LGtWMZMl4JYKDw1JNo7f+RE/wcrUeQoyS nZRC8eUrybDfB0rKv11bVLjWOP3RJ0ej5k8AnosvGAlA0Lzah3OqXxFKiUti8lqUTh O4vwR4osTYHrVvAUxoYASsrVPJ68aAxmKlnAn5XnxH3U6/Beb2BFr+cxBTsB5fgU4A 3KLbRiiHZOsRA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64D63CEACD6; Tue, 1 Oct 2024 14:39:28 +0000 (UTC) From: =?utf-8?q?Duje_Mihanovi=C4=87_via_B4_Relay?= Date: Tue, 01 Oct 2024 16:37:36 +0200 Subject: [PATCH v13 06/12] clk: mmp: Add Marvell PXA1908 APBCP driver Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241001-pxa1908-lkml-v13-6-6b9a7f64f9ae@skole.hr> References: <20241001-pxa1908-lkml-v13-0-6b9a7f64f9ae@skole.hr> In-Reply-To: <20241001-pxa1908-lkml-v13-0-6b9a7f64f9ae@skole.hr> To: Michael Turquette , Stephen Boyd , Linus Walleij , Rob Herring , Conor Dooley , Tony Lindgren , Haojian Zhuang , =?utf-8?q?Duje_Mihanovi=C4=87?= , Lubomir Rintel , Catalin Marinas , Will Deacon , Rob Herring , Krzysztof Kozlowski Cc: phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Karel Balej , David Wronek , linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3743; i=duje.mihanovic@skole.hr; s=20240706; h=from:subject:message-id; bh=2YEQvX+kbOqYyF1VUDj2VpxW3KDCmlPyBE8tlQ5VbOU=; b=owGbwMvMwCW21nBykGv/WmbG02pJDGl/OCe5J/MYcyw4qSfwUbL1lLXfqUN3dkdtWL3HbG5GW vvC7LaujlIWBjEuBlkxRZbc/47XeD+LbN2evcwAZg4rE8gQBi5OAZhI+nOGfwb/f3fNLPnopn7V T6/n7z3DE3MuTYl5Fl51vSCvQ7taaDHDH94E56LO999CJPzkjDir3/NeU3uSknh05+u9wTuz8iY 7cgAA X-Developer-Key: i=duje.mihanovic@skole.hr; a=openpgp; fpr=6DFF41D60DF314B5B76BA630AD319352458FAD03 X-Endpoint-Received: by B4 Relay for duje.mihanovic@skole.hr/20240706 with auth_id=191 X-Original-From: =?utf-8?q?Duje_Mihanovi=C4=87?= Reply-To: duje.mihanovic@skole.hr From: Duje Mihanović Add driver for the APBCP controller block found on Marvell's PXA1908 SoC. Signed-off-by: Duje Mihanović --- drivers/clk/mmp/Makefile | 2 +- drivers/clk/mmp/clk-pxa1908-apbcp.c | 82 +++++++++++++++++++++++++++++++++++++ 2 files changed, 83 insertions(+), 1 deletion(-) diff --git a/drivers/clk/mmp/Makefile b/drivers/clk/mmp/Makefile index 685bb80f8ae1f16d967dc4f6f5a6ce4e3f52d2bd..038bcd4d035e1807973f5094db5565fe437e0650 100644 --- a/drivers/clk/mmp/Makefile +++ b/drivers/clk/mmp/Makefile @@ -11,4 +11,4 @@ obj-$(CONFIG_MACH_MMP_DT) += clk-of-pxa168.o clk-of-pxa910.o obj-$(CONFIG_COMMON_CLK_MMP2) += clk-of-mmp2.o clk-pll.o pwr-island.o obj-$(CONFIG_COMMON_CLK_MMP2_AUDIO) += clk-audio.o -obj-$(CONFIG_ARCH_MMP) += clk-of-pxa1928.o clk-pxa1908-apbc.o +obj-$(CONFIG_ARCH_MMP) += clk-of-pxa1928.o clk-pxa1908-apbc.o clk-pxa1908-apbcp.o diff --git a/drivers/clk/mmp/clk-pxa1908-apbcp.c b/drivers/clk/mmp/clk-pxa1908-apbcp.c new file mode 100644 index 0000000000000000000000000000000000000000..08f3845cbb1becfa08e82e6e7fd8cb8aac7a0385 --- /dev/null +++ b/drivers/clk/mmp/clk-pxa1908-apbcp.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include +#include +#include + +#include + +#include "clk.h" + +#define APBCP_UART2 0x1c +#define APBCP_TWSI2 0x28 +#define APBCP_AICER 0x38 + +#define APBCP_NR_CLKS 4 + +struct pxa1908_clk_unit { + struct mmp_clk_unit unit; + void __iomem *base; +}; + +static DEFINE_SPINLOCK(uart2_lock); + +static const char * const uart_parent_names[] = {"pll1_117", "uart_pll"}; + +static struct mmp_param_gate_clk apbcp_gate_clks[] = { + {PXA1908_CLK_UART2, "uart2_clk", "uart2_mux", CLK_SET_RATE_PARENT, APBCP_UART2, 0x7, 0x3, 0x0, 0, &uart2_lock}, + {PXA1908_CLK_TWSI2, "twsi2_clk", "pll1_32", CLK_SET_RATE_PARENT, APBCP_TWSI2, 0x7, 0x3, 0x0, 0, NULL}, + {PXA1908_CLK_AICER, "ripc_clk", NULL, 0, APBCP_AICER, 0x7, 0x2, 0x0, 0, NULL}, +}; + +static struct mmp_param_mux_clk apbcp_mux_clks[] = { + {0, "uart2_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBCP_UART2, 4, 3, 0, &uart2_lock}, +}; + +static void pxa1908_apb_p_periph_clk_init(struct pxa1908_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + + mmp_register_mux_clks(unit, apbcp_mux_clks, pxa_unit->base, + ARRAY_SIZE(apbcp_mux_clks)); + mmp_register_gate_clks(unit, apbcp_gate_clks, pxa_unit->base, + ARRAY_SIZE(apbcp_gate_clks)); +} + +static int pxa1908_apbcp_probe(struct platform_device *pdev) +{ + struct pxa1908_clk_unit *pxa_unit; + + pxa_unit = devm_kzalloc(&pdev->dev, sizeof(*pxa_unit), GFP_KERNEL); + if (IS_ERR(pxa_unit)) + return PTR_ERR(pxa_unit); + + pxa_unit->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pxa_unit->base)) + return PTR_ERR(pxa_unit->base); + + mmp_clk_init(pdev->dev.of_node, &pxa_unit->unit, APBCP_NR_CLKS); + + pxa1908_apb_p_periph_clk_init(pxa_unit); + + return 0; +} + +static const struct of_device_id pxa1908_apbcp_match_table[] = { + { .compatible = "marvell,pxa1908-apbcp" }, + { } +}; +MODULE_DEVICE_TABLE(of, pxa1908_apbcp_match_table); + +static struct platform_driver pxa1908_apbcp_driver = { + .probe = pxa1908_apbcp_probe, + .driver = { + .name = "pxa1908-apbcp", + .of_match_table = pxa1908_apbcp_match_table + } +}; +module_platform_driver(pxa1908_apbcp_driver); + +MODULE_AUTHOR("Duje Mihanović "); +MODULE_DESCRIPTION("Marvell PXA1908 APBCP Clock Driver"); +MODULE_LICENSE("GPL");