[PATCH 2/3] clk: imx: Add support for pllv3 enet clock

[Lukasz Majewski]

This code has been ported from Linux kernel v5.5.5 (tag) and has been
adjusted to U-Boot's DM.

It adds support for correct recognition of IMX_PLLV3_ENET flag in the
clk-pllv3.c driver.

Signed-off-by: Lukasz Majewski <lu...@denx.de>
---

 drivers/clk/imx/clk-pllv3.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/clk/imx/clk-pllv3.c b/drivers/clk/imx/clk-pllv3.c
index 525442debf..88baf10f6a 100644
--- a/drivers/clk/imx/clk-pllv3.c
+++ b/drivers/clk/imx/clk-pllv3.c
@@ -20,6 +20,7 @@
 #define UBOOT_DM_CLK_IMX_PLLV3_SYS     "imx_clk_pllv3_sys"
 #define UBOOT_DM_CLK_IMX_PLLV3_USB     "imx_clk_pllv3_usb"
 #define UBOOT_DM_CLK_IMX_PLLV3_AV      "imx_clk_pllv3_av"
+#define UBOOT_DM_CLK_IMX_PLLV3_ENET     "imx_clk_pllv3_enet"
 
 #define PLL_NUM_OFFSET         0x10
 #define PLL_DENOM_OFFSET       0x20
@@ -34,6 +35,7 @@ struct clk_pllv3 {
        bool            powerup_set;
        u32             div_mask;
        u32             div_shift;
+       unsigned long   ref_clock;
 };
 
 #define to_clk_pllv3(_clk) container_of(_clk, struct clk_pllv3, clk)
@@ -224,6 +226,19 @@ static const struct clk_ops clk_pllv3_av_ops = {
        .set_rate       = clk_pllv3_av_set_rate,
 };
 
+static ulong clk_pllv3_enet_get_rate(struct clk *clk)
+{
+       struct clk_pllv3 *pll = to_clk_pllv3(clk);
+
+       return pll->ref_clock;
+}
+
+static const struct clk_ops clk_pllv3_enet_ops = {
+       .enable = clk_pllv3_generic_enable,
+       .disable        = clk_pllv3_generic_disable,
+       .get_rate       = clk_pllv3_enet_get_rate,
+};
+
 struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const char *name,
                          const char *parent_name, void __iomem *base,
                          u32 div_mask)
@@ -260,6 +275,10 @@ struct clk *imx_clk_pllv3(enum imx_pllv3_type type, const 
char *name,
                pll->div_shift = 0;
                pll->powerup_set = false;
                break;
+       case IMX_PLLV3_ENET:
+               drv_name = UBOOT_DM_CLK_IMX_PLLV3_ENET;
+               pll->ref_clock = 500000000;
+               break;
        default:
                kfree(pll);
                return ERR_PTR(-ENOTSUPP);
@@ -305,3 +324,9 @@ U_BOOT_DRIVER(clk_pllv3_av) = {
        .ops    = &clk_pllv3_av_ops,
        .flags = DM_FLAG_PRE_RELOC,
 };
+
+U_BOOT_DRIVER(clk_pllv3_enet) = {
+       .name   = UBOOT_DM_CLK_IMX_PLLV3_ENET,
+       .id     = UCLASS_CLK,
+       .ops    = &clk_pllv3_enet_ops,
+};
-- 
2.20.1