[PATCH v3 2/3] phy: rockchip-inno-usb2: add initial support for rk3588 PHY
Jonas Karlman
jonas at kwiboo.se
Sun Apr 2 13:04:50 CEST 2023
Hi Eugen,
On 2023-03-31 11:40, Eugen Hristev wrote:
> Add initial support for the rk3588 PHY variant.
> The driver now looks for phy-supply and enables/disables the vbus
> accordingly.
Maybe this should be added to core phy uclass to closer match linux?
Look like e.g. meson phy drivers also handle a phy-supply and could also
benefit from having this in phy uclass instead of in each phy driver.
Regards,
Jonas
> The lookup for the host-port reg inside the struct now does a do {} while()
> instead of a while() {} in order to allow a first check for reg == 0.
>
> Co-developed-by: Frank Wang <frank.wang at rock-chips.com>
> Signed-off-by: Frank Wang <frank.wang at rock-chips.com>
> Signed-off-by: Eugen Hristev <eugen.hristev at collabora.com>
> Tested-by: Vasily Khoruzhick <anarsoul at gmail.com> # rk3568-based board
> Tested-by: Xavier Drudis Ferran <xdrudis at tinet.cat> # rk3399 rock pi 4B+
> ---
> Changes in v3:
> - add handling of -EBUSY and -EALREADY for regulator return
> Changes in v2:
> - add handling of -EACCES
>
> drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 109 +++++++++++++++++-
> 1 file changed, 104 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> index 55e1dbcfef7e..75c50670524e 100644
> --- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> +++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
> @@ -13,6 +13,7 @@
> #include <dm/device_compat.h>
> #include <dm/lists.h>
> #include <generic-phy.h>
> +#include <power/regulator.h>
> #include <reset.h>
> #include <syscon.h>
> #include <asm/gpio.h>
> @@ -61,6 +62,7 @@ struct rockchip_usb2phy_cfg {
> struct rockchip_usb2phy {
> void *reg_base;
> struct clk phyclk;
> + struct udevice *vbus_supply[USB2PHY_NUM_PORTS];
> const struct rockchip_usb2phy_cfg *phy_cfg;
> };
>
> @@ -86,11 +88,34 @@ struct rockchip_usb2phy_port_cfg *us2phy_get_port(struct phy *phy)
> return &phy_cfg->port_cfgs[phy->id];
> }
>
> +static struct udevice *rockchip_usb2phy_check_vbus(struct phy *phy)
> +{
> + struct udevice *parent = phy->dev->parent;
> + struct rockchip_usb2phy *priv = dev_get_priv(parent);
> + struct udevice *vbus = NULL;
> +
> + if (phy->id == USB2PHY_PORT_HOST)
> + vbus = priv->vbus_supply[USB2PHY_PORT_HOST];
> +
> + return vbus;
> +}
> +
> 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);
> + struct udevice *vbus = NULL;
> + int ret;
> +
> + vbus = rockchip_usb2phy_check_vbus(phy);
> + if (vbus) {
> + ret = regulator_set_enable(vbus, true);
> + if (ret && ret != -EALREADY) {
> + dev_err(phy->dev, "vbus enable failed: %d\n", ret);
> + return ret;
> + }
> + }
>
> property_enable(priv->reg_base, &port_cfg->phy_sus, false);
>
> @@ -105,6 +130,17 @@ static int rockchip_usb2phy_power_off(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);
> + struct udevice *vbus = NULL;
> + int ret;
> +
> + vbus = rockchip_usb2phy_check_vbus(phy);
> + if (vbus) {
> + ret = regulator_set_enable(vbus, false);
> + if (ret && ret != -EACCES && ret != -EBUSY) {
> + dev_info(phy->dev, "vbus disable failed: %d\n", ret);
> + return ret;
> + }
> + }
>
> property_enable(priv->reg_base, &port_cfg->phy_sus, true);
>
> @@ -149,13 +185,20 @@ static int rockchip_usb2phy_of_xlate(struct phy *phy,
> struct ofnode_phandle_args *args)
> {
> const char *name = phy->dev->name;
> + struct udevice *parent = phy->dev->parent;
> + struct rockchip_usb2phy *priv = dev_get_priv(parent);
>
> - if (!strcasecmp(name, "host-port"))
> + if (!strcasecmp(name, "host-port")) {
> phy->id = USB2PHY_PORT_HOST;
> - else if (!strcasecmp(name, "otg-port"))
> + device_get_supply_regulator(phy->dev, "phy-supply",
> + &priv->vbus_supply[USB2PHY_PORT_HOST]);
> + } else if (!strcasecmp(name, "otg-port")) {
> phy->id = USB2PHY_PORT_OTG;
> - else
> + device_get_supply_regulator(phy->dev, "phy-supply",
> + &priv->vbus_supply[USB2PHY_PORT_OTG]);
> + } else {
> dev_err(phy->dev, "improper %s device\n", name);
> + }
>
> return 0;
> }
> @@ -201,14 +244,14 @@ static int rockchip_usb2phy_probe(struct udevice *dev)
>
> /* find out a proper config which can be matched with dt. */
> index = 0;
> - while (phy_cfgs[index].reg) {
> + do {
> if (phy_cfgs[index].reg == reg) {
> priv->phy_cfg = &phy_cfgs[index];
> break;
> }
>
> ++index;
> - }
> + } while (phy_cfgs[index].reg);
>
> if (!priv->phy_cfg) {
> dev_err(dev, "failed find proper phy-cfg\n");
> @@ -348,6 +391,58 @@ static const struct rockchip_usb2phy_cfg rk3568_phy_cfgs[] = {
> { /* sentinel */ }
> };
>
> +static const struct rockchip_usb2phy_cfg rk3588_phy_cfgs[] = {
> + {
> + .reg = 0x0000,
> + .port_cfgs = {
> + [USB2PHY_PORT_OTG] = {
> + .phy_sus = { 0x000c, 11, 11, 0, 1 },
> + .ls_det_en = { 0x0080, 0, 0, 0, 1 },
> + .ls_det_st = { 0x0084, 0, 0, 0, 1 },
> + .ls_det_clr = { 0x0088, 0, 0, 0, 1 },
> + .utmi_ls = { 0x00c0, 10, 9, 0, 1 },
> + }
> + },
> + },
> + {
> + .reg = 0x4000,
> + .port_cfgs = {
> + [USB2PHY_PORT_OTG] = {
> + .phy_sus = { 0x000c, 11, 11, 0, 0 },
> + .ls_det_en = { 0x0080, 0, 0, 0, 1 },
> + .ls_det_st = { 0x0084, 0, 0, 0, 1 },
> + .ls_det_clr = { 0x0088, 0, 0, 0, 1 },
> + .utmi_ls = { 0x00c0, 10, 9, 0, 1 },
> + }
> + },
> + },
> + {
> + .reg = 0x8000,
> + .port_cfgs = {
> + [USB2PHY_PORT_HOST] = {
> + .phy_sus = { 0x0008, 2, 2, 0, 1 },
> + .ls_det_en = { 0x0080, 0, 0, 0, 1 },
> + .ls_det_st = { 0x0084, 0, 0, 0, 1 },
> + .ls_det_clr = { 0x0088, 0, 0, 0, 1 },
> + .utmi_ls = { 0x00c0, 10, 9, 0, 1 },
> + }
> + },
> + },
> + {
> + .reg = 0xc000,
> + .port_cfgs = {
> + [USB2PHY_PORT_HOST] = {
> + .phy_sus = { 0x0008, 2, 2, 0, 1 },
> + .ls_det_en = { 0x0080, 0, 0, 0, 1 },
> + .ls_det_st = { 0x0084, 0, 0, 0, 1 },
> + .ls_det_clr = { 0x0088, 0, 0, 0, 1 },
> + .utmi_ls = { 0x00c0, 10, 9, 0, 1 },
> + }
> + },
> + },
> + { /* sentinel */ }
> +};
> +
> static const struct udevice_id rockchip_usb2phy_ids[] = {
> {
> .compatible = "rockchip,rk3399-usb2phy",
> @@ -357,6 +452,10 @@ static const struct udevice_id rockchip_usb2phy_ids[] = {
> .compatible = "rockchip,rk3568-usb2phy",
> .data = (ulong)&rk3568_phy_cfgs,
> },
> + {
> + .compatible = "rockchip,rk3588-usb2phy",
> + .data = (ulong)&rk3588_phy_cfgs,
> + },
> { /* sentinel */ }
> };
>
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