Quoting Tarek Dakhran (2014-05-23 03:35:42) > The EXYNOS5410 clocks are statically listed and registered > using the Samsung specific common clock helper functions. > > Signed-off-by: Tarek Dakhran <t.dakhran@xxxxxxxxxxx> > Signed-off-by: Vyacheslav Tyrtov <v.tyrtov@xxxxxxxxxxx> Quick glance over it. Looks good to me. Regards, Mike > --- > .../devicetree/bindings/clock/exynos5410-clock.txt | 51 +++++ > drivers/clk/samsung/Makefile | 1 + > drivers/clk/samsung/clk-exynos5410.c | 209 ++++++++++++++++++++ > include/dt-bindings/clock/exynos5410.h | 33 ++++ > 4 files changed, 294 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/exynos5410-clock.txt > create mode 100644 drivers/clk/samsung/clk-exynos5410.c > create mode 100644 include/dt-bindings/clock/exynos5410.h > > diff --git a/Documentation/devicetree/bindings/clock/exynos5410-clock.txt b/Documentation/devicetree/bindings/clock/exynos5410-clock.txt > new file mode 100644 > index 0000000..82337c4 > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/exynos5410-clock.txt > @@ -0,0 +1,51 @@ > +* Samsung Exynos5410 Clock Controller > + > +The Exynos5410 clock controller generates and supplies clock to various > +controllers within the Exynos5410 SoC. > + > +Required Properties: > + > +- compatible: should be "samsung,exynos5410-clock" > + > +- reg: physical base address of the controller and length of memory mapped > + region. > + > +- #clock-cells: should be 1. > + > +All available clocks are defined as preprocessor macros in > +dt-bindings/clock/exynos5410.h header and can be used in device > +tree sources. > + > +External clock: > +There is clock that is generated outside the SoC. It is expected > +that it is defined using standard clock bindings with following > + - compatible: should be "samsung,exynos5410-oscclk" > + > +Example 1: An example of a clock controller node is listed below. > + > + clock: clock-controller@0x10010000 { > + compatible = "samsung,exynos5410-clock"; > + reg = <0x10010000 0x30000>; > + #clock-cells = <1>; > + }; > + > +Example 2: Required external clock. > + > + fixed-rate-clocks { > + oscclk { > + compatible = "samsung,exynos5410-oscclk"; > + clock-frequency = <24000000>; > + }; > + }; > + > +Example 3: UART controller node that consumes the clock generated by the clock > + controller. Refer to the standard clock bindings for information > + about 'clocks' and 'clock-names' property. > + > + serial@12C20000 { > + compatible = "samsung,exynos4210-uart"; > + reg = <0x12C00000 0x100>; > + interrupts = <0 51 0>; > + clocks = <&clock CLK_UART0>, <&clock CLK_SCLK_UART0>; > + clock-names = "uart", "clk_uart_baud0"; > + }; > diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile > index 25646c6..69e8177 100644 > --- a/drivers/clk/samsung/Makefile > +++ b/drivers/clk/samsung/Makefile > @@ -7,6 +7,7 @@ obj-$(CONFIG_SOC_EXYNOS3250) += clk-exynos3250.o > obj-$(CONFIG_ARCH_EXYNOS4) += clk-exynos4.o > obj-$(CONFIG_SOC_EXYNOS5250) += clk-exynos5250.o > obj-$(CONFIG_SOC_EXYNOS5260) += clk-exynos5260.o > +obj-$(CONFIG_SOC_EXYNOS5410) += clk-exynos5410.o > obj-$(CONFIG_SOC_EXYNOS5420) += clk-exynos5420.o > obj-$(CONFIG_SOC_EXYNOS5440) += clk-exynos5440.o > obj-$(CONFIG_ARCH_EXYNOS) += clk-exynos-audss.o > diff --git a/drivers/clk/samsung/clk-exynos5410.c b/drivers/clk/samsung/clk-exynos5410.c > new file mode 100644 > index 0000000..c9505ab > --- /dev/null > +++ b/drivers/clk/samsung/clk-exynos5410.c > @@ -0,0 +1,209 @@ > +/* > + * Copyright (c) 2013 Samsung Electronics Co., Ltd. > + * Author: Tarek Dakhran <t.dakhran@xxxxxxxxxxx> > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + * > + * Common Clock Framework support for Exynos5410 SoC. > +*/ > + > +#include <dt-bindings/clock/exynos5410.h> > + > +#include <linux/clk.h> > +#include <linux/clkdev.h> > +#include <linux/clk-provider.h> > +#include <linux/of.h> > +#include <linux/of_address.h> > + > +#include "clk.h" > + > +#define APLL_LOCK 0x0 > +#define APLL_CON0 0x100 > +#define CPLL_LOCK 0x10020 > +#define CPLL_CON0 0x10120 > +#define MPLL_LOCK 0x4000 > +#define MPLL_CON0 0x4100 > +#define BPLL_LOCK 0x20010 > +#define BPLL_CON0 0x20110 > +#define KPLL_LOCK 0x28000 > +#define KPLL_CON0 0x28100 > + > +#define SRC_CPU 0x200 > +#define DIV_CPU0 0x500 > +#define SRC_CPERI1 0x4204 > +#define DIV_TOP0 0x10510 > +#define DIV_TOP1 0x10514 > +#define DIV_FSYS1 0x1054c > +#define DIV_FSYS2 0x10550 > +#define DIV_PERIC0 0x10558 > +#define SRC_TOP0 0x10210 > +#define SRC_TOP1 0x10214 > +#define SRC_TOP2 0x10218 > +#define SRC_FSYS 0x10244 > +#define SRC_PERIC0 0x10250 > +#define SRC_MASK_FSYS 0x10340 > +#define SRC_MASK_PERIC0 0x10350 > +#define GATE_BUS_FSYS0 0x10740 > +#define GATE_IP_FSYS 0x10944 > +#define GATE_IP_PERIC 0x10950 > +#define GATE_IP_PERIS 0x10960 > +#define SRC_CDREX 0x20200 > +#define SRC_KFC 0x28200 > +#define DIV_KFC0 0x28500 > + > +/* list of PLLs */ > +enum exynos5410_plls { > + apll, cpll, mpll, > + bpll, kpll, > + nr_plls /* number of PLLs */ > +}; > + > +/* list of all parent clocks */ > +PNAME(apll_p) = { "fin_pll", "fout_apll", }; > +PNAME(bpll_p) = { "fin_pll", "fout_bpll", }; > +PNAME(cpll_p) = { "fin_pll", "fout_cpll" }; > +PNAME(mpll_p) = { "fin_pll", "fout_mpll", }; > +PNAME(kpll_p) = { "fin_pll", "fout_kpll", }; > + > +PNAME(mout_cpu_p) = { "mout_apll", "sclk_mpll", }; > +PNAME(mout_kfc_p) = { "mout_kpll", "sclk_mpll", }; > + > +PNAME(mpll_user_p) = { "fin_pll", "sclk_mpll", }; > +PNAME(bpll_user_p) = { "fin_pll", "sclk_bpll", }; > +PNAME(mpll_bpll_p) = { "sclk_mpll_muxed", "sclk_bpll_muxed", }; > + > +PNAME(group2_p) = { "fin_pll", "fin_pll", "none", "none", > + "none", "none", "sclk_mpll_bpll", > + "none", "none", "sclk_cpll" }; > + > +static struct samsung_mux_clock exynos5410_mux_clks[] __initdata = { > + MUX(0, "mout_apll", apll_p, SRC_CPU, 0, 1), > + MUX(0, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1), > + > + MUX(0, "mout_kpll", kpll_p, SRC_KFC, 0, 1), > + MUX(0, "mout_kfc", mout_kfc_p, SRC_KFC, 16, 1), > + > + MUX(0, "sclk_mpll", mpll_p, SRC_CPERI1, 8, 1), > + MUX(0, "sclk_mpll_muxed", mpll_user_p, SRC_TOP2, 20, 1), > + > + MUX(0, "sclk_bpll", bpll_p, SRC_CDREX, 0, 1), > + MUX(0, "sclk_bpll_muxed", bpll_user_p, SRC_TOP2, 24, 1), > + > + MUX(0, "sclk_cpll", cpll_p, SRC_TOP2, 8, 1), > + > + MUX(0, "sclk_mpll_bpll", mpll_bpll_p, SRC_TOP1, 20, 1), > + > + MUX(0, "mout_mmc0", group2_p, SRC_FSYS, 0, 4), > + MUX(0, "mout_mmc1", group2_p, SRC_FSYS, 4, 4), > + MUX(0, "mout_mmc2", group2_p, SRC_FSYS, 8, 4), > + > + MUX(0, "mout_uart0", group2_p, SRC_PERIC0, 0, 4), > + MUX(0, "mout_uart1", group2_p, SRC_PERIC0, 4, 4), > + MUX(0, "mout_uart2", group2_p, SRC_PERIC0, 8, 4), > + > + MUX(0, "mout_aclk200", mpll_bpll_p, SRC_TOP0, 12, 1), > + MUX(0, "mout_aclk400", mpll_bpll_p, SRC_TOP0, 20, 1), > +}; > + > +static struct samsung_div_clock exynos5410_div_clks[] __initdata = { > + DIV(0, "div_arm", "mout_cpu", DIV_CPU0, 0, 3), > + DIV(0, "div_arm2", "div_arm", DIV_CPU0, 28, 3), > + > + DIV(0, "div_acp", "div_arm2", DIV_CPU0, 8, 3), > + DIV(0, "div_cpud", "div_arm2", DIV_CPU0, 4, 3), > + DIV(0, "div_atb", "div_arm2", DIV_CPU0, 16, 3), > + DIV(0, "pclk_dbg", "div_arm2", DIV_CPU0, 20, 3), > + > + DIV(0, "div_kfc", "mout_kfc", DIV_KFC0, 0, 3), > + DIV(0, "div_aclk", "div_kfc", DIV_KFC0, 4, 3), > + DIV(0, "div_pclk", "div_kfc", DIV_KFC0, 20, 3), > + > + DIV(0, "aclk66_pre", "sclk_mpll_muxed", DIV_TOP1, 24, 3), > + DIV(0, "aclk66", "aclk66_pre", DIV_TOP0, 0, 3), > + > + DIV(0, "div_mmc0", "mout_mmc0", DIV_FSYS1, 0, 4), > + DIV(0, "div_mmc1", "mout_mmc1", DIV_FSYS1, 16, 4), > + DIV(0, "div_mmc2", "mout_mmc2", DIV_FSYS2, 0, 4), > + > + DIV_F(0, "div_mmc_pre0", "div_mmc0", > + DIV_FSYS1, 8, 8, CLK_SET_RATE_PARENT, 0), > + DIV_F(0, "div_mmc_pre1", "div_mmc1", > + DIV_FSYS1, 24, 8, CLK_SET_RATE_PARENT, 0), > + DIV_F(0, "div_mmc_pre2", "div_mmc2", > + DIV_FSYS2, 8, 8, CLK_SET_RATE_PARENT, 0), > + > + DIV(0, "div_uart0", "mout_uart0", DIV_PERIC0, 0, 4), > + DIV(0, "div_uart1", "mout_uart1", DIV_PERIC0, 4, 4), > + DIV(0, "div_uart2", "mout_uart2", DIV_PERIC0, 8, 4), > + DIV(0, "div_uart3", "mout_uart3", DIV_PERIC0, 12, 4), > + > + DIV(0, "aclk200", "mout_aclk200", DIV_TOP0, 12, 3), > + DIV(0, "aclk400", "mout_aclk400", DIV_TOP0, 24, 3), > +}; > + > +static struct samsung_gate_clock exynos5410_gate_clks[] __initdata = { > + GATE(CLK_MCT, "mct", "aclk66", GATE_IP_PERIS, 18, 0, 0), > + > + GATE(CLK_SCLK_MMC0, "sclk_mmc0", "div_mmc_pre0", > + SRC_MASK_FSYS, 0, CLK_SET_RATE_PARENT, 0), > + GATE(CLK_SCLK_MMC1, "sclk_mmc1", "div_mmc_pre1", > + SRC_MASK_FSYS, 4, CLK_SET_RATE_PARENT, 0), > + GATE(CLK_SCLK_MMC2, "sclk_mmc2", "div_mmc_pre2", > + SRC_MASK_FSYS, 8, CLK_SET_RATE_PARENT, 0), > + > + GATE(CLK_MMC0, "sdmmc0", "aclk200", GATE_BUS_FSYS0, 12, 0, 0), > + GATE(CLK_MMC1, "sdmmc1", "aclk200", GATE_BUS_FSYS0, 13, 0, 0), > + GATE(CLK_MMC2, "sdmmc2", "aclk200", GATE_BUS_FSYS0, 14, 0, 0), > + > + GATE(CLK_UART0, "uart0", "aclk66", GATE_IP_PERIC, 0, 0, 0), > + GATE(CLK_UART1, "uart1", "aclk66", GATE_IP_PERIC, 1, 0, 0), > + GATE(CLK_UART2, "uart2", "aclk66", GATE_IP_PERIC, 2, 0, 0), > + > + GATE(CLK_SCLK_UART0, "sclk_uart0", "div_uart0", > + SRC_MASK_PERIC0, 0, CLK_SET_RATE_PARENT, 0), > + GATE(CLK_SCLK_UART1, "sclk_uart1", "div_uart1", > + SRC_MASK_PERIC0, 4, CLK_SET_RATE_PARENT, 0), > + GATE(CLK_SCLK_UART2, "sclk_uart2", "div_uart2", > + SRC_MASK_PERIC0, 8, CLK_SET_RATE_PARENT, 0), > +}; > + > +static struct samsung_pll_clock exynos5410_plls[nr_plls] __initdata = { > + [apll] = PLL(pll_35xx, CLK_FOUT_APLL, "fout_apll", "fin_pll", APLL_LOCK, > + APLL_CON0, NULL), > + [cpll] = PLL(pll_35xx, CLK_FOUT_CPLL, "fout_cpll", "fin_pll", CPLL_LOCK, > + CPLL_CON0, NULL), > + [mpll] = PLL(pll_35xx, CLK_FOUT_MPLL, "fout_mpll", "fin_pll", MPLL_LOCK, > + MPLL_CON0, NULL), > + [bpll] = PLL(pll_35xx, CLK_FOUT_BPLL, "fout_bpll", "fin_pll", BPLL_LOCK, > + BPLL_CON0, NULL), > + [kpll] = PLL(pll_35xx, CLK_FOUT_KPLL, "fout_kpll", "fin_pll", KPLL_LOCK, > + KPLL_CON0, NULL), > +}; > + > +/* register exynos5410 clocks */ > +static void __init exynos5410_clk_init(struct device_node *np) > +{ > + struct samsung_clk_provider *ctx; > + void __iomem *reg_base; > + > + reg_base = of_iomap(np, 0); > + if (!reg_base) > + panic("%s: failed to map registers\n", __func__); > + > + ctx = samsung_clk_init(np, reg_base, CLK_NR_CLKS); > + > + samsung_clk_register_pll(ctx, exynos5410_plls, > + ARRAY_SIZE(exynos5410_plls), reg_base); > + > + samsung_clk_register_mux(ctx, exynos5410_mux_clks, > + ARRAY_SIZE(exynos5410_mux_clks)); > + samsung_clk_register_div(ctx, exynos5410_div_clks, > + ARRAY_SIZE(exynos5410_div_clks)); > + samsung_clk_register_gate(ctx, exynos5410_gate_clks, > + ARRAY_SIZE(exynos5410_gate_clks)); > + > + pr_debug("Exynos5410: clock setup completed.\n"); > +} > +CLK_OF_DECLARE(exynos5410_clk, "samsung,exynos5410-clock", exynos5410_clk_init); > diff --git a/include/dt-bindings/clock/exynos5410.h b/include/dt-bindings/clock/exynos5410.h > new file mode 100644 > index 0000000..9b180f0 > --- /dev/null > +++ b/include/dt-bindings/clock/exynos5410.h > @@ -0,0 +1,33 @@ > +#ifndef _DT_BINDINGS_CLOCK_EXYNOS_5410_H > +#define _DT_BINDINGS_CLOCK_EXYNOS_5410_H > + > +/* core clocks */ > +#define CLK_FIN_PLL 1 > +#define CLK_FOUT_APLL 2 > +#define CLK_FOUT_CPLL 3 > +#define CLK_FOUT_MPLL 4 > +#define CLK_FOUT_BPLL 5 > +#define CLK_FOUT_KPLL 6 > + > +/* gate for special clocks (sclk) */ > +#define CLK_SCLK_UART0 128 > +#define CLK_SCLK_UART1 129 > +#define CLK_SCLK_UART2 130 > +#define CLK_SCLK_UART3 131 > +#define CLK_SCLK_MMC0 132 > +#define CLK_SCLK_MMC1 133 > +#define CLK_SCLK_MMC2 134 > + > +/* gate clocks */ > +#define CLK_UART0 257 > +#define CLK_UART1 258 > +#define CLK_UART2 259 > +#define CLK_UART3 260 > +#define CLK_MCT 315 > +#define CLK_MMC0 351 > +#define CLK_MMC1 352 > +#define CLK_MMC2 353 > + > +#define CLK_NR_CLKS 512 > + > +#endif /* _DT_BINDINGS_CLOCK_EXYNOS_5410_H */ > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html