diff options
| author | Martin Blumenstingl <martin.blumenstingl@googlemail.com> | 2020-05-13 00:24:22 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-05-15 13:16:55 +0530 |
| commit | 6b99262fd2f210284b4d17928fd03bee2f5a4fe1 (patch) | |
| tree | fa5c5c322741c6b14e34f585f1b41ed35c0ec87e /drivers/phy | |
| parent | de143a40fa7d0acae4295c3b312ec96cc8dd9cd0 (diff) | |
| download | linux-6b99262fd2f210284b4d17928fd03bee2f5a4fe1.tar.bz2 | |
phy: amlogic: meson8b-usb2: Don't set REG_ADP_BC_ACA_ENABLE on Meson8
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: Thomas Graichen <thomas.graichen@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Thomas Graichen <thomas.graichen@gmail.com>
Link: https://lore.kernel.org/r/20200512222424.549351-5-martin.blumenstingl@googlemail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/amlogic/phy-meson8b-usb2.c | 48 |
1 files 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); |