From: Arnd Bergmann Date: Wed, 20 Jan 2021 13:10:23 +0000 (+0100) Subject: clk: remove tango4 driver X-Git-Tag: accepted/tizen/unified/20230118.172025~7811^2~3^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7765f32a8e9b03cf0e25698b5a841e00c1a5090e;p=platform%2Fkernel%2Flinux-rpi.git clk: remove tango4 driver The tango platform is getting removed, so the driver is no longer needed. Cc: Marc Gonzalez Cc: Mans Rullgard Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20210120131026.1721788-2-arnd@kernel.org Acked-by: Mans Rullgard Signed-off-by: Stephen Boyd --- diff --git a/Documentation/devicetree/bindings/clock/tango4-clock.txt b/Documentation/devicetree/bindings/clock/tango4-clock.txt deleted file mode 100644 index 19c580a..0000000 --- a/Documentation/devicetree/bindings/clock/tango4-clock.txt +++ /dev/null @@ -1,23 +0,0 @@ -* Sigma Designs Tango4 Clock Generator - -The Tango4 clock generator outputs cpu_clk and sys_clk (the latter is used -for RAM and various peripheral devices). The clock binding described here -is applicable to all Tango4 SoCs. - -Required Properties: - -- compatible: should be "sigma,tango4-clkgen". -- reg: physical base address of the device and length of memory mapped region. -- clocks: phandle of the input clock (crystal oscillator). -- clock-output-names: should be "cpuclk" and "sysclk". -- #clock-cells: should be set to 1. - -Example: - - clkgen: clkgen@10000 { - compatible = "sigma,tango4-clkgen"; - reg = <0x10000 0x40>; - clocks = <&xtal>; - clock-output-names = "cpuclk", "sysclk"; - #clock-cells = <1>; - }; diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile index a1197d75..3ea1b6e 100644 --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -62,7 +62,6 @@ obj-$(CONFIG_COMMON_CLK_SI570) += clk-si570.o obj-$(CONFIG_COMMON_CLK_STM32F) += clk-stm32f4.o obj-$(CONFIG_COMMON_CLK_STM32H7) += clk-stm32h7.o obj-$(CONFIG_COMMON_CLK_STM32MP157) += clk-stm32mp1.o -obj-$(CONFIG_ARCH_TANGO) += clk-tango4.o obj-$(CONFIG_CLK_TWL6040) += clk-twl6040.o obj-$(CONFIG_ARCH_U300) += clk-u300.o obj-$(CONFIG_ARCH_VT8500) += clk-vt8500.o diff --git a/drivers/clk/clk-tango4.c b/drivers/clk/clk-tango4.c deleted file mode 100644 index fe12a43..0000000 --- a/drivers/clk/clk-tango4.c +++ /dev/null @@ -1,85 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include -#include -#include -#include -#include - -#define CLK_COUNT 4 /* cpu_clk, sys_clk, usb_clk, sdio_clk */ -static struct clk *clks[CLK_COUNT]; -static struct clk_onecell_data clk_data = { clks, CLK_COUNT }; - -#define SYSCLK_DIV 0x20 -#define CPUCLK_DIV 0x24 -#define DIV_BYPASS BIT(23) - -/*** CLKGEN_PLL ***/ -#define extract_pll_n(val) ((val >> 0) & ((1u << 7) - 1)) -#define extract_pll_k(val) ((val >> 13) & ((1u << 3) - 1)) -#define extract_pll_m(val) ((val >> 16) & ((1u << 3) - 1)) -#define extract_pll_isel(val) ((val >> 24) & ((1u << 3) - 1)) - -static void __init make_pll(int idx, const char *parent, void __iomem *base) -{ - char name[8]; - u32 val, mul, div; - - sprintf(name, "pll%d", idx); - val = readl(base + idx * 8); - mul = extract_pll_n(val) + 1; - div = (extract_pll_m(val) + 1) << extract_pll_k(val); - clk_register_fixed_factor(NULL, name, parent, 0, mul, div); - if (extract_pll_isel(val) != 1) - panic("%s: input not set to XTAL_IN\n", name); -} - -static void __init make_cd(int idx, void __iomem *base) -{ - char name[8]; - u32 val, mul, div; - - sprintf(name, "cd%d", idx); - val = readl(base + idx * 8); - mul = 1 << 27; - div = (2 << 27) + val; - clk_register_fixed_factor(NULL, name, "pll2", 0, mul, div); - if (val > 0xf0000000) - panic("%s: unsupported divider %x\n", name, val); -} - -static void __init tango4_clkgen_setup(struct device_node *np) -{ - struct clk **pp = clk_data.clks; - void __iomem *base = of_iomap(np, 0); - const char *parent = of_clk_get_parent_name(np, 0); - - if (!base) - panic("%pOFn: invalid address\n", np); - - if (readl(base + CPUCLK_DIV) & DIV_BYPASS) - panic("%pOFn: unsupported cpuclk setup\n", np); - - if (readl(base + SYSCLK_DIV) & DIV_BYPASS) - panic("%pOFn: unsupported sysclk setup\n", np); - - writel(0x100, base + CPUCLK_DIV); /* disable frequency ramping */ - - make_pll(0, parent, base); - make_pll(1, parent, base); - make_pll(2, parent, base); - make_cd(2, base + 0x80); - make_cd(6, base + 0x80); - - pp[0] = clk_register_divider(NULL, "cpu_clk", "pll0", 0, - base + CPUCLK_DIV, 8, 8, CLK_DIVIDER_ONE_BASED, NULL); - pp[1] = clk_register_fixed_factor(NULL, "sys_clk", "pll1", 0, 1, 4); - pp[2] = clk_register_fixed_factor(NULL, "usb_clk", "cd2", 0, 1, 2); - pp[3] = clk_register_fixed_factor(NULL, "sdio_clk", "cd6", 0, 1, 2); - - if (IS_ERR(pp[0]) || IS_ERR(pp[1]) || IS_ERR(pp[2]) || IS_ERR(pp[3])) - panic("%pOFn: clk registration failed\n", np); - - if (of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data)) - panic("%pOFn: clk provider registration failed\n", np); -} -CLK_OF_DECLARE(tango4_clkgen, "sigma,tango4-clkgen", tango4_clkgen_setup);