[PATCH v2 1/3] phy: rockchip-inno-usb2: add support for phy-supply
Kever Yang
kever.yang at rock-chips.com
Wed Mar 8 01:52:23 CET 2023
Hi Vasily,
This patch is cover by patch[1] from Eugen, right?
Thanks,
- Kever
[1]
https://patchwork.ozlabs.org/project/uboot/patch/20230303073134.282462-2-eugen.hristev@collabora.com/
On 2023/3/8 06:08, Vasily Khoruzhick wrote:
> PHY driver needs to enable PHY supply, otherwise port will
> remain unpowered.
>
> Signed-off-by: Vasily Khoruzhick <anarsoul at gmail.com>
> ---
> v2: address check_patch.pl issues
>
> drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 64 ++++++++++++++++++-
> 1 file changed, 61 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> index 55e1dbcfef..a859cd6f18 100644
> --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> @@ -19,6 +19,7 @@
> #include <asm/io.h>
> #include <linux/iopoll.h>
> #include <asm/arch-rockchip/clock.h>
> +#include <power/regulator.h>
>
> DECLARE_GLOBAL_DATA_PTR;
>
> @@ -62,6 +63,10 @@ struct rockchip_usb2phy {
> void *reg_base;
> struct clk phyclk;
> const struct rockchip_usb2phy_cfg *phy_cfg;
> +#if IS_ENABLED(CONFIG_DM_REGULATOR)
> + struct udevice *host_supply;
> + struct udevice *otg_supply;
> +#endif
> };
>
> static inline int property_enable(void *reg_base,
> @@ -86,12 +91,42 @@ struct rockchip_usb2phy_port_cfg *us2phy_get_port(struct phy *phy)
> return &phy_cfg->port_cfgs[phy->id];
> }
>
> +#if IS_ENABLED(CONFIG_DM_REGULATOR)
> +static int rockchip_usb2phy_regulator_set_enable(struct phy *phy, bool enable)
> +{
> + struct udevice *parent = dev_get_parent(phy->dev);
> + struct rockchip_usb2phy *priv = dev_get_priv(parent);
> + struct udevice *supply;
> + int ret = 0;
> +
> + if (phy->id == USB2PHY_PORT_HOST)
> + supply = priv->host_supply;
> + else
> + supply = priv->otg_supply;
> +
> + if (supply)
> + ret = regulator_set_enable(supply, enable);
> +
> + return ret;
> +}
> +#else
> +static int rockchip_usb2phy_regulator_set_enable(struct phy *phy, bool enable)
> +{
> + return 0;
> +}
> +#endif
> +
> static int rockchip_usb2phy_power_on(struct phy *phy)
> {
> struct udevice *parent = dev_get_parent(phy->dev);
> struct rockchip_usb2phy *priv = dev_get_priv(parent);
> const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
>
> + int ret = rockchip_usb2phy_regulator_set_enable(phy, true);
> +
> + if (ret)
> + return ret;
> +
> property_enable(priv->reg_base, &port_cfg->phy_sus, false);
>
> /* waiting for the utmi_clk to become stable */
> @@ -108,6 +143,11 @@ static int rockchip_usb2phy_power_off(struct phy *phy)
>
> property_enable(priv->reg_base, &port_cfg->phy_sus, true);
>
> + int ret = rockchip_usb2phy_regulator_set_enable(phy, false);
> +
> + if (ret)
> + return ret;
> +
> return 0;
> }
>
> @@ -149,13 +189,31 @@ static int rockchip_usb2phy_of_xlate(struct phy *phy,
> struct ofnode_phandle_args *args)
> {
> const char *name = phy->dev->name;
> + struct udevice *parent = dev_get_parent(phy->dev);
> + struct rockchip_usb2phy *priv = dev_get_priv(parent);
> +#if IS_ENABLED(CONFIG_DM_REGULATOR)
> + struct udevice *supply;
> + int ret = device_get_supply_regulator(phy->dev, "phy-supply", &supply);
> +
> + if (ret && ret != -ENOENT) {
> + pr_err("Failed to get PHY regulator\n");
> + return ret;
> + }
> +#endif
>
> - if (!strcasecmp(name, "host-port"))
> + if (!strcasecmp(name, "host-port")) {
> phy->id = USB2PHY_PORT_HOST;
> - else if (!strcasecmp(name, "otg-port"))
> +#if IS_ENABLED(CONFIG_DM_REGULATOR)
> + priv->host_supply = supply;
> +#endif
> + } else if (!strcasecmp(name, "otg-port")) {
> phy->id = USB2PHY_PORT_OTG;
> - else
> +#if IS_ENABLED(CONFIG_DM_REGULATOR)
> + priv->otg_supply = supply;
> +#endif
> + } else {
> dev_err(phy->dev, "improper %s device\n", name);
> + }
>
> return 0;
> }
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