[PATCH 16/23] clk: i.MX: pllv3: Add support for the i.MX7 enet pll

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.ha...@pengutronix.de>
---
 drivers/clk/imx/clk-pllv3.c | 23 ++++++++++++++++++-----
 drivers/clk/imx/clk.h       |  1 +
 2 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
index 29c0f1c70..2a08996a6 100644
--- a/drivers/clk/imx/clk-pllv3.c
+++ b/drivers/clk/imx/clk-pllv3.c
@@ -30,6 +30,7 @@
 #define BM_PLL_ENABLE          (0x1 << 13)
 #define BM_PLL_BYPASS          (0x1 << 16)
 #define BM_PLL_LOCK            (0x1 << 31)
+#define IMX7_ENET_PLL_POWER    (0x1 << 5)
 
 struct clk_pllv3 {
        struct clk      clk;
@@ -38,6 +39,8 @@ struct clk_pllv3 {
        u32             div_mask;
        u32             div_shift;
        const char      *parent;
+       u32             ref_clock;
+       u32             power_bit;
 };
 
 #define to_clk_pllv3(_clk) container_of(_clk, struct clk_pllv3, clk)
@@ -51,9 +54,9 @@ static int clk_pllv3_enable(struct clk *clk)
        val = readl(pll->base);
        val &= ~BM_PLL_BYPASS;
        if (pll->powerup_set)
-               val |= BM_PLL_POWER;
+               val |= pll->power_bit;
        else
-               val &= ~BM_PLL_POWER;
+               val &= ~pll->power_bit;
        writel(val, pll->base);
 
        /* Wait for PLL to lock */
@@ -83,9 +86,9 @@ static void clk_pllv3_disable(struct clk *clk)
 
        val |= BM_PLL_BYPASS;
        if (pll->powerup_set)
-               val &= ~BM_PLL_POWER;
+               val &= ~pll->power_bit;
        else
-               val |= BM_PLL_POWER;
+               val |= pll->power_bit;
        writel(val, pll->base);
 }
 
@@ -265,7 +268,9 @@ static const struct clk_ops clk_pllv3_av_ops = {
 static unsigned long clk_pllv3_enet_recalc_rate(struct clk *clk,
                                                unsigned long parent_rate)
 {
-       return 500000000;
+       struct clk_pllv3 *pll = to_clk_pllv3(clk);
+
+       return pll->ref_clock;
 }
 
 static const struct clk_ops clk_pllv3_enet_ops = {
@@ -289,6 +294,8 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const 
char *name,
 
        pll = xzalloc(sizeof(*pll));
 
+       pll->power_bit = BM_PLL_POWER;
+
        switch (type) {
        case IMX_PLLV3_SYS:
                ops = &clk_pllv3_sys_ops;
@@ -302,7 +309,13 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const 
char *name,
        case IMX_PLLV3_AV:
                ops = &clk_pllv3_av_ops;
                break;
+       case IMX_PLLV3_ENET_IMX7:
+               pll->power_bit = IMX7_ENET_PLL_POWER;
+               pll->ref_clock = 1000000000;
+               ops = &clk_pllv3_enet_ops;
+               break;
        case IMX_PLLV3_ENET:
+               pll->ref_clock = 500000000;
                ops = &clk_pllv3_enet_ops;
                break;
        case IMX_PLLV3_MLB:
diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h
index 970f65c7d..7ecb14654 100644
--- a/drivers/clk/imx/clk.h
+++ b/drivers/clk/imx/clk.h
@@ -82,6 +82,7 @@ enum imx_pllv3_type {
        IMX_PLLV3_USB_VF610,
        IMX_PLLV3_AV,
        IMX_PLLV3_ENET,
+       IMX_PLLV3_ENET_IMX7,
        IMX_PLLV3_MLB,
 };
 
-- 
2.11.0


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