clk: exynos3250: Add cpu clock configuration data and instaniate cpu clock

This patch add CPU clock configuration data and instantiate the CPU
clock type for Exynos3250 to support Samsung specific cpu-clock type.

Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

diff --git a/drivers/clk/samsung/clk-exynos3250.c b/drivers/clk/samsung/clk-exynos3250.c
index 538de66a759e12092e70b385e579bbc112133ca3..1880a90e2ebca600bca7b71722b7550651245dac 100644 (file)
--- a/drivers/clk/samsung/clk-exynos3250.c
+++ b/drivers/clk/samsung/clk-exynos3250.c
@@ -19,6 +19,7 @@
 #include <dt-bindings/clock/exynos3250.h>
 
 #include "clk.h"
+#include "clk-cpu.h"
 #include "clk-pll.h"
 
 #define SRC_LEFTBUS            0x4200
@@ -319,8 +320,10 @@ static struct samsung_mux_clock mux_clks[] __initdata = {
        MUX(CLK_MOUT_MPLL_USER_C, "mout_mpll_user_c", mout_mpll_user_p,
            SRC_CPU, 24, 1),
        MUX(CLK_MOUT_HPM, "mout_hpm", mout_hpm_p, SRC_CPU, 20, 1),
-       MUX(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1),
-       MUX(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1),
+       MUX_F(CLK_MOUT_CORE, "mout_core", mout_core_p, SRC_CPU, 16, 1,
+                       CLK_SET_RATE_PARENT, 0),
+       MUX_F(CLK_MOUT_APLL, "mout_apll", mout_apll_p, SRC_CPU, 0, 1,
+                       CLK_SET_RATE_PARENT, 0),
 };
 
 static struct samsung_div_clock div_clks[] __initdata = {
@@ -772,6 +775,26 @@ static struct samsung_cmu_info cmu_info __initdata = {
        .nr_clk_regs            = ARRAY_SIZE(exynos3250_cmu_clk_regs),
 };
 
+#define E3250_CPU_DIV0(apll, pclk_dbg, atb, corem)                     \
+               (((apll) << 24) | ((pclk_dbg) << 20) | ((atb) << 16) |  \
+               ((corem) << 4))
+#define E3250_CPU_DIV1(hpm, copy)                                      \
+               (((hpm) << 4) | ((copy) << 0))
+
+static const struct exynos_cpuclk_cfg_data e3250_armclk_d[] __initconst = {
+       { 1000000, E3250_CPU_DIV0(1, 7, 4, 1), E3250_CPU_DIV1(7, 7), },
+       {  900000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  800000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  700000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  600000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  500000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  400000, E3250_CPU_DIV0(1, 7, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  300000, E3250_CPU_DIV0(1, 5, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  200000, E3250_CPU_DIV0(1, 3, 3, 1), E3250_CPU_DIV1(7, 7), },
+       {  100000, E3250_CPU_DIV0(1, 1, 1, 1), E3250_CPU_DIV1(7, 7), },
+       {  0 },
+};
+
 static void __init exynos3250_cmu_init(struct device_node *np)
 {
        struct samsung_clk_provider *ctx;
@@ -780,6 +803,11 @@ static void __init exynos3250_cmu_init(struct device_node *np)
        if (!ctx)
                return;
 
+       exynos_register_cpu_clock(ctx, CLK_ARM_CLK, "armclk",
+                       mout_core_p[0], mout_core_p[1], 0x14200,
+                       e3250_armclk_d, ARRAY_SIZE(e3250_armclk_d),
+                       CLK_CPU_HAS_DIV1);
+
        exynos3_core_down_clock(ctx->reg_base);
 }
 CLK_OF_DECLARE(exynos3250_cmu, "samsung,exynos3250-cmu", exynos3250_cmu_init);

diff --git a/include/dt-bindings/clock/exynos3250.h b/include/dt-bindings/clock/exynos3250.h
index aab088d301999278fa283a7f6d4a6e38ce6546d6..63d01c15d2b368f63114622c2fac1eb51977eee7 100644 (file)
--- a/include/dt-bindings/clock/exynos3250.h
+++ b/include/dt-bindings/clock/exynos3250.h
@@ -31,6 +31,7 @@
 #define CLK_FOUT_VPLL                  4
 #define CLK_FOUT_UPLL                  5
 #define CLK_FOUT_MPLL                  6
+#define CLK_ARM_CLK                    7
 
 /* Muxes */
 #define CLK_MOUT_MPLL_USER_L           16