| Message ID | 20200502114752.1048500-5-martin.blumenstingl@googlemail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | phy: meson8b-usb2: small fixes and improvements | expand |
On Sat, May 2, 2020 at 1:48 PM Martin Blumenstingl <martin.blumenstingl@googlemail.com> wrote: > > Skip setting REG_ADP_BC_ACA_ENABLE on Meson8 SoCs and polling for the > REG_ADP_BC_ACA_PIN_FLOAT bit. The vendor also skips this part on Meson8 > SoCs. > This fixes initialization of the host-only USB PHY on Meson8 which would > otherwise fail with "USB ID detect failed!". > > Fixes: 4a3449d1a0a10c ("phy: meson8b-usb2: add support for the USB PHY on Meson8 SoCs") > Reported-by: hexdump <hexdump0815@googlemail.com> > Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: hexdump <hexdump0815@googlemail.com> BEFORE: usb failed with: [ 3.451386] dwc2 c9040000.usb: c9040000.usb supply vusb_d not found, using dummy regulator [ 3.454097] dwc2 c9040000.usb: c9040000.usb supply vusb_a not found, using dummy regulator [ 3.463602] phy phy-c1108800.phy.0: USB ID detect failed! [ 3.467646] phy phy-c1108800.phy.0: phy poweron failed --> -22 AFTER: usb is detected and working fine on my mxiiii meson8 box > --- > drivers/phy/amlogic/phy-meson8b-usb2.c | 48 ++++++++++++++++++++------ > 1 file changed, 38 insertions(+), 10 deletions(-) > > diff --git a/drivers/phy/amlogic/phy-meson8b-usb2.c b/drivers/phy/amlogic/phy-meson8b-usb2.c > index 86824cc21f11..7236b8885f07 100644 > --- a/drivers/phy/amlogic/phy-meson8b-usb2.c > +++ b/drivers/phy/amlogic/phy-meson8b-usb2.c > @@ -10,6 +10,7 @@ > #include <linux/io.h> > #include <linux/module.h> > #include <linux/of_device.h> > +#include <linux/property.h> > #include <linux/regmap.h> > #include <linux/reset.h> > #include <linux/phy/phy.h> > @@ -105,12 +106,17 @@ > #define RESET_COMPLETE_TIME 500 > #define ACA_ENABLE_COMPLETE_TIME 50 > > +struct phy_meson8b_usb2_match_data { > + bool host_enable_aca; > +}; > + > struct phy_meson8b_usb2_priv { > - struct regmap *regmap; > - enum usb_dr_mode dr_mode; > - struct clk *clk_usb_general; > - struct clk *clk_usb; > - struct reset_control *reset; > + struct regmap *regmap; > + enum usb_dr_mode dr_mode; > + struct clk *clk_usb_general; > + struct clk *clk_usb; > + struct reset_control *reset; > + const struct phy_meson8b_usb2_match_data *match; > }; > > static const struct regmap_config phy_meson8b_usb2_regmap_conf = { > @@ -166,7 +172,8 @@ static int phy_meson8b_usb2_power_on(struct phy *phy) > regmap_update_bits(priv->regmap, REG_CTRL, REG_CTRL_SOF_TOGGLE_OUT, > REG_CTRL_SOF_TOGGLE_OUT); > > - if (priv->dr_mode == USB_DR_MODE_HOST) { > + if (priv->dr_mode == USB_DR_MODE_HOST && > + priv->match->host_enable_aca) { > regmap_update_bits(priv->regmap, REG_ADP_BC, > REG_ADP_BC_ACA_ENABLE, > REG_ADP_BC_ACA_ENABLE); > @@ -216,6 +223,10 @@ static int phy_meson8b_usb2_probe(struct platform_device *pdev) > if (IS_ERR(base)) > return PTR_ERR(base); > > + priv->match = device_get_match_data(&pdev->dev); > + if (!priv->match) > + return -ENODEV; > + > priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, > &phy_meson8b_usb2_regmap_conf); > if (IS_ERR(priv->regmap)) > @@ -254,11 +265,28 @@ static int phy_meson8b_usb2_probe(struct platform_device *pdev) > return PTR_ERR_OR_ZERO(phy_provider); > } > > +static const struct phy_meson8b_usb2_match_data phy_meson8_usb2_match_data = { > + .host_enable_aca = false, > +}; > + > +static const struct phy_meson8b_usb2_match_data phy_meson8b_usb2_match_data = { > + .host_enable_aca = true, > +}; > + > static const struct of_device_id phy_meson8b_usb2_of_match[] = { > - { .compatible = "amlogic,meson8-usb2-phy", }, > - { .compatible = "amlogic,meson8b-usb2-phy", }, > - { .compatible = "amlogic,meson-gxbb-usb2-phy", }, > - { }, > + { > + .compatible = "amlogic,meson8-usb2-phy", > + .data = &phy_meson8_usb2_match_data > + }, > + { > + .compatible = "amlogic,meson8b-usb2-phy", > + .data = &phy_meson8b_usb2_match_data > + }, > + { > + .compatible = "amlogic,meson-gxbb-usb2-phy", > + .data = &phy_meson8b_usb2_match_data > + }, > + { /* sentinel */ } > }; > MODULE_DEVICE_TABLE(of, phy_meson8b_usb2_of_match); > > -- > 2.26.2 >
diff --git a/drivers/phy/amlogic/phy-meson8b-usb2.c b/drivers/phy/amlogic/phy-meson8b-usb2.c index 86824cc21f11..7236b8885f07 100644 --- a/drivers/phy/amlogic/phy-meson8b-usb2.c +++ b/drivers/phy/amlogic/phy-meson8b-usb2.c @@ -10,6 +10,7 @@ #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/property.h> #include <linux/regmap.h> #include <linux/reset.h> #include <linux/phy/phy.h> @@ -105,12 +106,17 @@ #define RESET_COMPLETE_TIME 500 #define ACA_ENABLE_COMPLETE_TIME 50 +struct phy_meson8b_usb2_match_data { + bool host_enable_aca; +}; + struct phy_meson8b_usb2_priv { - struct regmap *regmap; - enum usb_dr_mode dr_mode; - struct clk *clk_usb_general; - struct clk *clk_usb; - struct reset_control *reset; + struct regmap *regmap; + enum usb_dr_mode dr_mode; + struct clk *clk_usb_general; + struct clk *clk_usb; + struct reset_control *reset; + const struct phy_meson8b_usb2_match_data *match; }; static const struct regmap_config phy_meson8b_usb2_regmap_conf = { @@ -166,7 +172,8 @@ static int phy_meson8b_usb2_power_on(struct phy *phy) regmap_update_bits(priv->regmap, REG_CTRL, REG_CTRL_SOF_TOGGLE_OUT, REG_CTRL_SOF_TOGGLE_OUT); - if (priv->dr_mode == USB_DR_MODE_HOST) { + if (priv->dr_mode == USB_DR_MODE_HOST && + priv->match->host_enable_aca) { regmap_update_bits(priv->regmap, REG_ADP_BC, REG_ADP_BC_ACA_ENABLE, REG_ADP_BC_ACA_ENABLE); @@ -216,6 +223,10 @@ static int phy_meson8b_usb2_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); + priv->match = device_get_match_data(&pdev->dev); + if (!priv->match) + return -ENODEV; + priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, &phy_meson8b_usb2_regmap_conf); if (IS_ERR(priv->regmap)) @@ -254,11 +265,28 @@ static int phy_meson8b_usb2_probe(struct platform_device *pdev) return PTR_ERR_OR_ZERO(phy_provider); } +static const struct phy_meson8b_usb2_match_data phy_meson8_usb2_match_data = { + .host_enable_aca = false, +}; + +static const struct phy_meson8b_usb2_match_data phy_meson8b_usb2_match_data = { + .host_enable_aca = true, +}; + static const struct of_device_id phy_meson8b_usb2_of_match[] = { - { .compatible = "amlogic,meson8-usb2-phy", }, - { .compatible = "amlogic,meson8b-usb2-phy", }, - { .compatible = "amlogic,meson-gxbb-usb2-phy", }, - { }, + { + .compatible = "amlogic,meson8-usb2-phy", + .data = &phy_meson8_usb2_match_data + }, + { + .compatible = "amlogic,meson8b-usb2-phy", + .data = &phy_meson8b_usb2_match_data + }, + { + .compatible = "amlogic,meson-gxbb-usb2-phy", + .data = &phy_meson8b_usb2_match_data + }, + { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, phy_meson8b_usb2_of_match);
Skip setting REG_ADP_BC_ACA_ENABLE on Meson8 SoCs and polling for the REG_ADP_BC_ACA_PIN_FLOAT bit. The vendor also skips this part on Meson8 SoCs. This fixes initialization of the host-only USB PHY on Meson8 which would otherwise fail with "USB ID detect failed!". Fixes: 4a3449d1a0a10c ("phy: meson8b-usb2: add support for the USB PHY on Meson8 SoCs") Reported-by: hexdump <hexdump0815@googlemail.com> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> --- drivers/phy/amlogic/phy-meson8b-usb2.c | 48 ++++++++++++++++++++------ 1 file changed, 38 insertions(+), 10 deletions(-)