Commit 7154b046 authored by Jesse Taube's avatar Jesse Taube Committed by Abel Vesa
Browse files

clk: imx: Add initial support for i.MXRT1050 clock driver 



Add clock driver support for i.MXRT1050.

Signed-off-by: default avatarJesse Taube <Mr.Bossman075@gmail.com>
Suggested-by: default avatarGiulio Benetti <giulio.benetti@benettiengineering.com>
Reviewed-by: default avatarStephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20220111215415.2075257-6-Mr.Bossman075@gmail.com


Signed-off-by: default avatarAbel Vesa <abel.vesa@nxp.com>
parent d6e35930

drivers/clk/imx/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -105,3 +105,10 @@ config CLK_IMX8ULP 
	select MXC_CLK

	help

	    Build the driver for i.MX8ULP CCM Clock Driver



config CLK_IMXRT1050

	tristate "IMXRT1050 CCM Clock Driver"

	depends on SOC_IMXRT

	select MXC_CLK

	help

	    Build the driver for i.MXRT1050 CCM Clock Driver

drivers/clk/imx/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -46,4 +46,5 @@ obj-$(CONFIG_CLK_IMX6SX) += clk-imx6sx.o 
obj-$(CONFIG_CLK_IMX6UL) += clk-imx6ul.o

obj-$(CONFIG_CLK_IMX7D)  += clk-imx7d.o

obj-$(CONFIG_CLK_IMX7ULP) += clk-imx7ulp.o

obj-$(CONFIG_CLK_IMXRT1050)  += clk-imxrt1050.o

obj-$(CONFIG_CLK_VF610)  += clk-vf610.o

drivers/clk/imx/clk-imxrt1050.c

0 → 100644
+168 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)

/*

 * Copyright (C) 2021

 * Author(s):

 * Jesse Taube <Mr.Bossman075@gmail.com>

 * Giulio Benetti <giulio.benetti@benettiengineering.com>

 */

#include <linux/clk.h>

#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/platform_device.h>

#include <dt-bindings/clock/imxrt1050-clock.h>



#include "clk.h"



static const char * const pll_ref_sels[] = {"osc", "dummy", };

static const char * const per_sels[] = {"ipg_pdof", "osc", };

static const char * const pll1_bypass_sels[] = {"pll1_arm", "pll1_arm_ref_sel", };

static const char * const pll2_bypass_sels[] = {"pll2_sys", "pll2_sys_ref_sel", };

static const char * const pll3_bypass_sels[] = {"pll3_usb_otg", "pll3_usb_otg_ref_sel", };

static const char * const pll5_bypass_sels[] = {"pll5_video", "pll5_video_ref_sel", };

static const char *const pre_periph_sels[] = {

	"pll2_sys", "pll2_pfd2_396m", "pll2_pfd0_352m", "arm_podf", };

static const char *const periph_sels[] = { "pre_periph_sel", "todo", };

static const char *const usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", };

static const char *const lpuart_sels[] = { "pll3_80m", "osc", };

static const char *const lcdif_sels[] = {

	"pll2_sys", "pll3_pfd3_454_74m", "pll5_video", "pll2_pfd0_352m",

	"pll2_pfd1_594m", "pll3_pfd1_664_62m", };

static const char *const semc_alt_sels[] = { "pll2_pfd2_396m", "pll3_pfd1_664_62m", };

static const char *const semc_sels[] = { "periph_sel", "semc_alt_sel", };



static struct clk_hw **hws;

static struct clk_hw_onecell_data *clk_hw_data;



static int imxrt1050_clocks_probe(struct platform_device *pdev)

{

	void __iomem *ccm_base;

	void __iomem *pll_base;

	struct device *dev = &pdev->dev;

	struct device_node *np = dev->of_node;

	struct device_node *anp;

	int ret;



	clk_hw_data = kzalloc(struct_size(clk_hw_data, hws,

					  IMXRT1050_CLK_END), GFP_KERNEL);

	if (WARN_ON(!clk_hw_data))

		return -ENOMEM;



	clk_hw_data->num = IMXRT1050_CLK_END;

	hws = clk_hw_data->hws;



	hws[IMXRT1050_CLK_OSC] = imx_obtain_fixed_clk_hw(np, "osc");



	anp = of_find_compatible_node(NULL, NULL, "fsl,imxrt-anatop");

	pll_base = of_iomap(anp, 0);

	of_node_put(anp);

	if (WARN_ON(!pll_base))

		return -ENOMEM;



	/* Anatop clocks */

	hws[IMXRT1050_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0UL);



	hws[IMXRT1050_CLK_PLL1_REF_SEL] = imx_clk_hw_mux("pll1_arm_ref_sel",

		pll_base + 0x0, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));

	hws[IMXRT1050_CLK_PLL2_REF_SEL] = imx_clk_hw_mux("pll2_sys_ref_sel",

		pll_base + 0x30, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));

	hws[IMXRT1050_CLK_PLL3_REF_SEL] = imx_clk_hw_mux("pll3_usb_otg_ref_sel",

		pll_base + 0x10, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));

	hws[IMXRT1050_CLK_PLL5_REF_SEL] = imx_clk_hw_mux("pll5_video_ref_sel",

		pll_base + 0xa0, 14, 2, pll_ref_sels, ARRAY_SIZE(pll_ref_sels));



	hws[IMXRT1050_CLK_PLL1_ARM] = imx_clk_hw_pllv3(IMX_PLLV3_SYS, "pll1_arm",

		"pll1_arm_ref_sel", pll_base + 0x0, 0x7f);

	hws[IMXRT1050_CLK_PLL2_SYS] = imx_clk_hw_pllv3(IMX_PLLV3_GENERIC, "pll2_sys",

		"pll2_sys_ref_sel", pll_base + 0x30, 0x1);

	hws[IMXRT1050_CLK_PLL3_USB_OTG] = imx_clk_hw_pllv3(IMX_PLLV3_USB, "pll3_usb_otg",

		"pll3_usb_otg_ref_sel", pll_base + 0x10, 0x1);

	hws[IMXRT1050_CLK_PLL5_VIDEO] = imx_clk_hw_pllv3(IMX_PLLV3_AV, "pll5_video",

		"pll5_video_ref_sel", pll_base + 0xa0, 0x7f);



	/* PLL bypass out */

	hws[IMXRT1050_CLK_PLL1_BYPASS] = imx_clk_hw_mux_flags("pll1_bypass", pll_base + 0x0, 16, 1,

		pll1_bypass_sels, ARRAY_SIZE(pll1_bypass_sels), CLK_SET_RATE_PARENT);

	hws[IMXRT1050_CLK_PLL2_BYPASS] = imx_clk_hw_mux_flags("pll2_bypass", pll_base + 0x30, 16, 1,

		pll2_bypass_sels, ARRAY_SIZE(pll2_bypass_sels), CLK_SET_RATE_PARENT);

	hws[IMXRT1050_CLK_PLL3_BYPASS] = imx_clk_hw_mux_flags("pll3_bypass", pll_base + 0x10, 16, 1,

		pll3_bypass_sels, ARRAY_SIZE(pll3_bypass_sels), CLK_SET_RATE_PARENT);

	hws[IMXRT1050_CLK_PLL5_BYPASS] = imx_clk_hw_mux_flags("pll5_bypass", pll_base + 0xa0, 16, 1,

		pll5_bypass_sels, ARRAY_SIZE(pll5_bypass_sels), CLK_SET_RATE_PARENT);



	hws[IMXRT1050_CLK_VIDEO_POST_DIV_SEL] = imx_clk_hw_divider("video_post_div_sel",

		"pll5_video", pll_base + 0xa0, 19, 2);

	hws[IMXRT1050_CLK_VIDEO_DIV] = imx_clk_hw_divider("video_div",

		"video_post_div_sel", pll_base + 0x170, 30, 2);



	hws[IMXRT1050_CLK_PLL3_80M] = imx_clk_hw_fixed_factor("pll3_80m",  "pll3_usb_otg", 1, 6);



	hws[IMXRT1050_CLK_PLL2_PFD0_352M] = imx_clk_hw_pfd("pll2_pfd0_352m", "pll2_sys", pll_base + 0x100, 0);

	hws[IMXRT1050_CLK_PLL2_PFD1_594M] = imx_clk_hw_pfd("pll2_pfd1_594m", "pll2_sys", pll_base + 0x100, 1);

	hws[IMXRT1050_CLK_PLL2_PFD2_396M] = imx_clk_hw_pfd("pll2_pfd2_396m", "pll2_sys", pll_base + 0x100, 2);

	hws[IMXRT1050_CLK_PLL3_PFD1_664_62M] = imx_clk_hw_pfd("pll3_pfd1_664_62m", "pll3_usb_otg", pll_base + 0xf0, 1);

	hws[IMXRT1050_CLK_PLL3_PFD3_454_74M] = imx_clk_hw_pfd("pll3_pfd3_454_74m", "pll3_usb_otg", pll_base + 0xf0, 3);



	/* CCM clocks */

	ccm_base = devm_platform_ioremap_resource(pdev, 0);

	if (WARN_ON(IS_ERR(ccm_base)))

		return PTR_ERR(ccm_base);



	hws[IMXRT1050_CLK_ARM_PODF] = imx_clk_hw_divider("arm_podf", "pll1_arm", ccm_base + 0x10, 0, 3);

	hws[IMXRT1050_CLK_PRE_PERIPH_SEL] = imx_clk_hw_mux("pre_periph_sel", ccm_base + 0x18, 18, 2,

		pre_periph_sels, ARRAY_SIZE(pre_periph_sels));

	hws[IMXRT1050_CLK_PERIPH_SEL] = imx_clk_hw_mux("periph_sel", ccm_base + 0x14, 25, 1,

		periph_sels, ARRAY_SIZE(periph_sels));

	hws[IMXRT1050_CLK_USDHC1_SEL] = imx_clk_hw_mux("usdhc1_sel", ccm_base + 0x1c, 16, 1,

		usdhc_sels, ARRAY_SIZE(usdhc_sels));

	hws[IMXRT1050_CLK_USDHC2_SEL] = imx_clk_hw_mux("usdhc2_sel", ccm_base + 0x1c, 17, 1,

		usdhc_sels, ARRAY_SIZE(usdhc_sels));

	hws[IMXRT1050_CLK_LPUART_SEL] = imx_clk_hw_mux("lpuart_sel", ccm_base + 0x24, 6, 1,

		lpuart_sels, ARRAY_SIZE(lpuart_sels));

	hws[IMXRT1050_CLK_LCDIF_SEL] = imx_clk_hw_mux("lcdif_sel", ccm_base + 0x38, 15, 3,

		lcdif_sels, ARRAY_SIZE(lcdif_sels));

	hws[IMXRT1050_CLK_PER_CLK_SEL] = imx_clk_hw_mux("per_sel", ccm_base + 0x1C, 6, 1,

		per_sels, ARRAY_SIZE(per_sels));

	hws[IMXRT1050_CLK_SEMC_ALT_SEL] = imx_clk_hw_mux("semc_alt_sel", ccm_base + 0x14, 7, 1,

		semc_alt_sels, ARRAY_SIZE(semc_alt_sels));

	hws[IMXRT1050_CLK_SEMC_SEL] = imx_clk_hw_mux_flags("semc_sel", ccm_base + 0x14, 6, 1,

		semc_sels, ARRAY_SIZE(semc_sels), CLK_IS_CRITICAL);



	hws[IMXRT1050_CLK_AHB_PODF] = imx_clk_hw_divider("ahb", "periph_sel", ccm_base + 0x14, 10, 3);

	hws[IMXRT1050_CLK_IPG_PDOF] = imx_clk_hw_divider("ipg", "ahb", ccm_base + 0x14, 8, 2);

	hws[IMXRT1050_CLK_PER_PDOF] = imx_clk_hw_divider("per", "per_sel", ccm_base + 0x1C, 0, 5);



	hws[IMXRT1050_CLK_USDHC1_PODF] = imx_clk_hw_divider("usdhc1_podf", "usdhc1_sel", ccm_base + 0x24, 11, 3);

	hws[IMXRT1050_CLK_USDHC2_PODF] = imx_clk_hw_divider("usdhc2_podf", "usdhc2_sel", ccm_base + 0x24, 16, 3);

	hws[IMXRT1050_CLK_LPUART_PODF] = imx_clk_hw_divider("lpuart_podf", "lpuart_sel", ccm_base + 0x24, 0, 6);

	hws[IMXRT1050_CLK_LCDIF_PRED] = imx_clk_hw_divider("lcdif_pred", "lcdif_sel", ccm_base + 0x38, 12, 3);

	hws[IMXRT1050_CLK_LCDIF_PODF] = imx_clk_hw_divider("lcdif_podf", "lcdif_pred", ccm_base + 0x18, 23, 3);



	hws[IMXRT1050_CLK_USDHC1] = imx_clk_hw_gate2("usdhc1", "usdhc1_podf", ccm_base + 0x80, 2);

	hws[IMXRT1050_CLK_USDHC2] = imx_clk_hw_gate2("usdhc2", "usdhc2_podf", ccm_base + 0x80, 4);

	hws[IMXRT1050_CLK_LPUART1] = imx_clk_hw_gate2("lpuart1", "lpuart_podf", ccm_base + 0x7c, 24);

	hws[IMXRT1050_CLK_LCDIF_APB] = imx_clk_hw_gate2("lcdif", "lcdif_podf", ccm_base + 0x74, 10);

	hws[IMXRT1050_CLK_DMA] = imx_clk_hw_gate("dma", "ipg", ccm_base + 0x7C, 6);

	hws[IMXRT1050_CLK_DMA_MUX] = imx_clk_hw_gate("dmamux0", "ipg", ccm_base + 0x7C, 7);

	imx_check_clk_hws(hws, IMXRT1050_CLK_END);



	ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data);

	if (ret < 0) {

		dev_err(dev, "Failed to register clks for i.MXRT1050.\n");

		imx_unregister_hw_clocks(hws, IMXRT1050_CLK_END);

	}

	return ret;

}

static const struct of_device_id imxrt1050_clk_of_match[] = {

	{ .compatible = "fsl,imxrt1050-ccm" },

	{ /* Sentinel */ }

};

MODULE_DEVICE_TABLE(of, imxrt1050_clk_of_match);



static struct platform_driver imxrt1050_clk_driver = {

	.probe = imxrt1050_clocks_probe,

	.driver = {

		.name = "imxrt1050-ccm",

		.of_match_table = imxrt1050_clk_of_match,

	},

};

module_platform_driver(imxrt1050_clk_driver);