From: Chun-Jie Chen Date: Sat, 9 Apr 2022 13:22:38 +0000 (+0800) Subject: clk: mediatek: Add MT8186 mcusys clock support X-Git-Tag: v6.6.17~7417^2~2^3~20 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1f2967a17c595672cf9a5edcbf2ee064421375d0;p=platform%2Fkernel%2Flinux-rpi.git clk: mediatek: Add MT8186 mcusys clock support Add MT8186 mcusys clock controller which provides muxes to select the clock source of APMCU. Signed-off-by: Chun-Jie Chen Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Miles Chen Link: https://lore.kernel.org/r/20220409132251.31725-3-chun-jie.chen@mediatek.com Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index 01ef02c..d5936cf 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -512,6 +512,14 @@ config COMMON_CLK_MT8183_VENCSYS help This driver supports MediaTek MT8183 vencsys clocks. +config COMMON_CLK_MT8186 + bool "Clock driver for MediaTek MT8186" + depends on ARM64 || COMPILE_TEST + select COMMON_CLK_MEDIATEK + default ARCH_MEDIATEK + help + This driver supports MediaTek MT8186 clocks. + config COMMON_CLK_MT8192 bool "Clock driver for MediaTek MT8192" depends on ARM64 || COMPILE_TEST diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index 7b0c264..677fa4f 100644 --- a/drivers/clk/mediatek/Makefile +++ b/drivers/clk/mediatek/Makefile @@ -71,6 +71,7 @@ obj-$(CONFIG_COMMON_CLK_MT8183_MFGCFG) += clk-mt8183-mfgcfg.o obj-$(CONFIG_COMMON_CLK_MT8183_MMSYS) += clk-mt8183-mm.o obj-$(CONFIG_COMMON_CLK_MT8183_VDECSYS) += clk-mt8183-vdec.o obj-$(CONFIG_COMMON_CLK_MT8183_VENCSYS) += clk-mt8183-venc.o +obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192.o obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o diff --git a/drivers/clk/mediatek/clk-mt8186-mcu.c b/drivers/clk/mediatek/clk-mt8186-mcu.c new file mode 100644 index 0000000..8083596 --- /dev/null +++ b/drivers/clk/mediatek/clk-mt8186-mcu.c @@ -0,0 +1,108 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// Copyright (c) 2022 MediaTek Inc. +// Author: Chun-Jie Chen + +#include +#include +#include + +#include "clk-mtk.h" + +static const char * const mcu_armpll_ll_parents[] = { + "clk26m", + "armpll_ll", + "mainpll", + "univpll_d2" +}; + +static const char * const mcu_armpll_bl_parents[] = { + "clk26m", + "armpll_bl", + "mainpll", + "univpll_d2" +}; + +static const char * const mcu_armpll_bus_parents[] = { + "clk26m", + "ccipll", + "mainpll", + "univpll_d2" +}; + +/* + * We only configure the CPU muxes when adjust CPU frequency in MediaTek CPUFreq Driver. + * Other fields like divider always keep the same value. (set once in bootloader) + */ +static struct mtk_composite mcu_muxes[] = { + /* CPU_PLLDIV_CFG0 */ + MUX(CLK_MCU_ARMPLL_LL_SEL, "mcu_armpll_ll_sel", mcu_armpll_ll_parents, 0x2A0, 9, 2), + /* CPU_PLLDIV_CFG1 */ + MUX(CLK_MCU_ARMPLL_BL_SEL, "mcu_armpll_bl_sel", mcu_armpll_bl_parents, 0x2A4, 9, 2), + /* BUS_PLLDIV_CFG */ + MUX(CLK_MCU_ARMPLL_BUS_SEL, "mcu_armpll_bus_sel", mcu_armpll_bus_parents, 0x2E0, 9, 2), +}; + +static const struct of_device_id of_match_clk_mt8186_mcu[] = { + { .compatible = "mediatek,mt8186-mcusys", }, + {} +}; + +static int clk_mt8186_mcu_probe(struct platform_device *pdev) +{ + struct clk_onecell_data *clk_data; + struct device_node *node = pdev->dev.of_node; + int r; + void __iomem *base; + + clk_data = mtk_alloc_clk_data(CLK_MCU_NR_CLK); + if (!clk_data) + return -ENOMEM; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) { + r = PTR_ERR(base); + goto free_mcu_data; + } + + r = mtk_clk_register_composites(mcu_muxes, ARRAY_SIZE(mcu_muxes), base, + NULL, clk_data); + if (r) + goto free_mcu_data; + + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + if (r) + goto unregister_composite_muxes; + + platform_set_drvdata(pdev, clk_data); + + return r; + +unregister_composite_muxes: + mtk_clk_unregister_composites(mcu_muxes, ARRAY_SIZE(mcu_muxes), clk_data); +free_mcu_data: + mtk_free_clk_data(clk_data); + return r; +} + +static int clk_mt8186_mcu_remove(struct platform_device *pdev) +{ + struct clk_onecell_data *clk_data = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + + of_clk_del_provider(node); + mtk_clk_unregister_composites(mcu_muxes, ARRAY_SIZE(mcu_muxes), clk_data); + mtk_free_clk_data(clk_data); + + return 0; +} + +static struct platform_driver clk_mt8186_mcu_drv = { + .probe = clk_mt8186_mcu_probe, + .remove = clk_mt8186_mcu_remove, + .driver = { + .name = "clk-mt8186-mcu", + .of_match_table = of_match_clk_mt8186_mcu, + }, +}; +builtin_platform_driver(clk_mt8186_mcu_drv);