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clk: imx: Add support for pllv3 enet clock

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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 <lukma@denx.de>
This commit is contained in:
Lukasz Majewski 2020-02-24 14:55:25 +01:00
parent d71fac8479
commit 8d540ccb11
1 changed files with 25 additions and 0 deletions
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25
drivers/clk/imx/clk-pllv3.c
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@ -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
@ -36,6 +37,7 @@ struct clk_pllv3 {
u32 enable_bit;
u32 div_mask;
u32 div_shift;
unsigned long ref_clock;
};
#define to_clk_pllv3(_clk) container_of(_clk, struct clk_pllv3, clk)
@ -232,6 +234,19 @@ 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)
@ -269,6 +284,10 @@ 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);
@ -314,3 +333,9 @@ 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,
};