clk: samsung: Add EPLL and VPLL freq table for exynos5250 SoC

Adds the EPLL and VPLL freq table for exynos5250 SoC.

Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org>
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/drivers/clk/samsung/clk-exynos5250.c b/drivers/clk/samsung/clk-exynos5250.c
index 7404084a3a1d63a15a4c1c9283bde61f695d23a1..df3628cf259766cf5d815dd26f0b1933ba73513c 100644 (file)
--- a/drivers/clk/samsung/clk-exynos5250.c
+++ b/drivers/clk/samsung/clk-exynos5250.c
@@ -494,6 +494,29 @@ static struct samsung_gate_clock exynos5250_gate_clks[] __initdata = {
        GATE(g2d, "g2d", "aclk200", GATE_IP_ACP, 3, 0, 0),
 };
 
+static __initdata struct samsung_pll_rate_table vpll_24mhz_tbl[] = {
+       /* sorted in descending order */
+       /* PLL_36XX_RATE(rate, m, p, s, k) */
+       PLL_36XX_RATE(266000000, 266, 3, 3, 0),
+       /* Not in UM, but need for eDP on snow */
+       PLL_36XX_RATE(70500000, 94, 2, 4, 0),
+       { },
+};
+
+static __initdata struct samsung_pll_rate_table epll_24mhz_tbl[] = {
+       /* sorted in descending order */
+       /* PLL_36XX_RATE(rate, m, p, s, k) */
+       PLL_36XX_RATE(192000000, 64, 2, 2, 0),
+       PLL_36XX_RATE(180633600, 90, 3, 2, 20762),
+       PLL_36XX_RATE(180000000, 90, 3, 2, 0),
+       PLL_36XX_RATE(73728000, 98, 2, 4, 19923),
+       PLL_36XX_RATE(67737600, 90, 2, 4, 20762),
+       PLL_36XX_RATE(49152000, 98, 3, 4, 19923),
+       PLL_36XX_RATE(45158400, 90, 3, 4, 20762),
+       PLL_36XX_RATE(32768000, 131, 3, 5, 4719),
+       { },
+};
+
 struct __initdata samsung_pll_clock exynos5250_plls[nr_plls] = {
        [apll] = PLL_A(pll_35xx, fout_apll, "fout_apll", "fin_pll", APLL_LOCK,
                APLL_CON0, "fout_apll", NULL),
@@ -520,6 +543,8 @@ static __initdata struct of_device_id ext_clk_match[] = {
 static void __init exynos5250_clk_init(struct device_node *np)
 {
        void __iomem *reg_base;
+       struct clk *vpllsrc;
+       unsigned long fin_pll_rate, mout_vpllsrc_rate = 0;
 
        if (np) {
                reg_base = of_iomap(np, 0);
@@ -537,6 +562,19 @@ static void __init exynos5250_clk_init(struct device_node *np)
                        ext_clk_match);
        samsung_clk_register_mux(exynos5250_pll_pmux_clks,
                                ARRAY_SIZE(exynos5250_pll_pmux_clks));
+
+       fin_pll_rate = _get_rate("fin_pll");
+
+       if (fin_pll_rate == 24 * MHZ)
+               exynos5250_plls[epll].rate_table = epll_24mhz_tbl;
+
+       vpllsrc = __clk_lookup("mout_vpllsrc");
+       if (vpllsrc)
+               mout_vpllsrc_rate = clk_get_rate(vpllsrc);
+
+       if (mout_vpllsrc_rate == 24 * MHZ)
+               exynos5250_plls[vpll].rate_table =  vpll_24mhz_tbl;
+
        samsung_clk_register_pll(exynos5250_plls, ARRAY_SIZE(exynos5250_plls),
                                        reg_base);
        samsung_clk_register_fixed_rate(exynos5250_fixed_rate_clks,

diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index b3f2532823d5b75188f45ce492cbe7e183f1ab98..e7dfccb5d98167f78e5d79163c7f83503cf5924f 100644 (file)
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -40,6 +40,8 @@ struct samsung_clock_alias {
                .alias          = a,                            \
        }
 
+#define MHZ (1000 * 1000)
+
 /**
  * struct samsung_fixed_rate_clock: information about fixed-rate clock
  * @id: platform specific id of the clock.