clk: samsung: exynos4: Register PLL rate tables for Exynos4x12

This patch adds rate tables for PLLs that can be reconfigured at runtime
for Exynos4x12 SoCs. Provided tables contain PLL coefficients for
input clock of 24 MHz and so are registered only in this case. MPLL does
not need runtime reconfiguration and so table for it is not provided.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/drivers/clk/samsung/clk-exynos4.c b/drivers/clk/samsung/clk-exynos4.c
index c6796aff24216f1031b1489d75b9c2fad35bed4c..bf5e5e1e99d9348eee77d57a407aec93df8e1913 100644 (file)
--- a/drivers/clk/samsung/clk-exynos4.c
+++ b/drivers/clk/samsung/clk-exynos4.c
@@ -1022,6 +1022,46 @@ static struct samsung_pll_rate_table exynos4210_vpll_rates[] __initdata = {
        { /* sentinel */ }
 };
 
+static struct samsung_pll_rate_table exynos4x12_apll_rates[] __initdata = {
+       PLL_35XX_RATE(1500000000, 250, 4, 0),
+       PLL_35XX_RATE(1400000000, 175, 3, 0),
+       PLL_35XX_RATE(1300000000, 325, 6, 0),
+       PLL_35XX_RATE(1200000000, 200, 4, 0),
+       PLL_35XX_RATE(1100000000, 275, 6, 0),
+       PLL_35XX_RATE(1000000000, 125, 3, 0),
+       PLL_35XX_RATE( 900000000, 150, 4, 0),
+       PLL_35XX_RATE( 800000000, 100, 3, 0),
+       PLL_35XX_RATE( 700000000, 175, 3, 1),
+       PLL_35XX_RATE( 600000000, 200, 4, 1),
+       PLL_35XX_RATE( 500000000, 125, 3, 1),
+       PLL_35XX_RATE( 400000000, 100, 3, 1),
+       PLL_35XX_RATE( 300000000, 200, 4, 2),
+       PLL_35XX_RATE( 200000000, 100, 3, 2),
+       { /* sentinel */ }
+};
+
+static struct samsung_pll_rate_table exynos4x12_epll_rates[] __initdata = {
+       PLL_36XX_RATE(192000000, 48, 3, 1,     0),
+       PLL_36XX_RATE(180633605, 45, 3, 1, 10381),
+       PLL_36XX_RATE(180000000, 45, 3, 1,     0),
+       PLL_36XX_RATE( 73727996, 73, 3, 3, 47710),
+       PLL_36XX_RATE( 67737602, 90, 4, 3, 20762),
+       PLL_36XX_RATE( 49151992, 49, 3, 3,  9961),
+       PLL_36XX_RATE( 45158401, 45, 3, 3, 10381),
+       { /* sentinel */ }
+};
+
+static struct samsung_pll_rate_table exynos4x12_vpll_rates[] __initdata = {
+       PLL_36XX_RATE(533000000, 133, 3, 1, 16384),
+       PLL_36XX_RATE(440000000, 110, 3, 1,     0),
+       PLL_36XX_RATE(350000000, 175, 3, 2,     0),
+       PLL_36XX_RATE(266000000, 133, 3, 2,     0),
+       PLL_36XX_RATE(160000000, 160, 3, 3,     0),
+       PLL_36XX_RATE(106031250,  53, 3, 2,  1024),
+       PLL_36XX_RATE( 53015625,  53, 3, 3,  1024),
+       { /* sentinel */ }
+};
+
 static struct samsung_pll_clock exynos4210_plls[nr_plls] __initdata = {
        [apll] = PLL_A(pll_4508, fout_apll, "fout_apll", "fin_pll", APLL_LOCK,
                APLL_CON0, "fout_apll", NULL),
@@ -1086,6 +1126,15 @@ static void __init exynos4_clk_init(struct device_node *np,
                samsung_clk_register_pll(exynos4210_plls,
                                        ARRAY_SIZE(exynos4210_plls), reg_base);
        } else {
+               if (_get_rate("fin_pll") == 24000000) {
+                       exynos4x12_plls[apll].rate_table =
+                                                       exynos4x12_apll_rates;
+                       exynos4x12_plls[epll].rate_table =
+                                                       exynos4x12_epll_rates;
+                       exynos4x12_plls[vpll].rate_table =
+                                                       exynos4x12_vpll_rates;
+               }
+
                samsung_clk_register_pll(exynos4x12_plls,
                                        ARRAY_SIZE(exynos4x12_plls), reg_base);
        }