From 7cafc01744067cfaac2d5c0342e6f5deb377100a Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Wed, 13 May 2020 00:24:23 +0200 Subject: [PATCH] phy: amlogic: meson8b-usb2: unset the IDDQ bit during PHY power-on The vendor driver unsets the set_iddig bit during power-on as well and sets it when suspending the PHY. I did not notice this in the vendor driver first, because it's part of the dwc_otg driver there (instead of their PHY code). While here, also add all other REG_DBG_UART register bit definitions. Signed-off-by: Martin Blumenstingl Tested-by: Thomas Graichen Link: https://lore.kernel.org/r/20200512222424.549351-6-martin.blumenstingl@googlemail.com Signed-off-by: Vinod Koul --- drivers/phy/amlogic/phy-meson8b-usb2.c | 44 ++++++++++++++++++++++++---------- 1 file changed, 32 insertions(+), 12 deletions(-) diff --git a/drivers/phy/amlogic/phy-meson8b-usb2.c b/drivers/phy/amlogic/phy-meson8b-usb2.c index 7236b8885f07..436dfa1a8a04 100644 --- a/drivers/phy/amlogic/phy-meson8b-usb2.c +++ b/drivers/phy/amlogic/phy-meson8b-usb2.c @@ -78,6 +78,17 @@ #define REG_ADP_BC_ACA_PIN_FLOAT BIT(26) #define REG_DBG_UART 0x10 + #define REG_DBG_UART_BYPASS_SEL BIT(0) + #define REG_DBG_UART_BYPASS_DM_EN BIT(1) + #define REG_DBG_UART_BYPASS_DP_EN BIT(2) + #define REG_DBG_UART_BYPASS_DM_DATA BIT(3) + #define REG_DBG_UART_BYPASS_DP_DATA BIT(4) + #define REG_DBG_UART_FSV_MINUS BIT(5) + #define REG_DBG_UART_FSV_PLUS BIT(6) + #define REG_DBG_UART_FSV_BURN_IN_TEST BIT(7) + #define REG_DBG_UART_LOOPBACK_EN_B BIT(8) + #define REG_DBG_UART_SET_IDDQ BIT(9) + #define REG_DBG_UART_ATE_RESET BIT(10) #define REG_TEST 0x14 #define REG_TEST_DATA_IN_MASK GENMASK(3, 0) @@ -172,20 +183,24 @@ 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 && - priv->match->host_enable_aca) { - regmap_update_bits(priv->regmap, REG_ADP_BC, - REG_ADP_BC_ACA_ENABLE, - REG_ADP_BC_ACA_ENABLE); + if (priv->dr_mode == USB_DR_MODE_HOST) { + regmap_update_bits(priv->regmap, REG_DBG_UART, + REG_DBG_UART_SET_IDDQ, 0); - udelay(ACA_ENABLE_COMPLETE_TIME); + if (priv->match->host_enable_aca) { + regmap_update_bits(priv->regmap, REG_ADP_BC, + REG_ADP_BC_ACA_ENABLE, + REG_ADP_BC_ACA_ENABLE); - regmap_read(priv->regmap, REG_ADP_BC, ®); - if (reg & REG_ADP_BC_ACA_PIN_FLOAT) { - dev_warn(&phy->dev, "USB ID detect failed!\n"); - clk_disable_unprepare(priv->clk_usb); - clk_disable_unprepare(priv->clk_usb_general); - return -EINVAL; + udelay(ACA_ENABLE_COMPLETE_TIME); + + regmap_read(priv->regmap, REG_ADP_BC, ®); + if (reg & REG_ADP_BC_ACA_PIN_FLOAT) { + dev_warn(&phy->dev, "USB ID detect failed!\n"); + clk_disable_unprepare(priv->clk_usb); + clk_disable_unprepare(priv->clk_usb_general); + return -EINVAL; + } } } @@ -196,6 +211,11 @@ static int phy_meson8b_usb2_power_off(struct phy *phy) { struct phy_meson8b_usb2_priv *priv = phy_get_drvdata(phy); + if (priv->dr_mode == USB_DR_MODE_HOST) + regmap_update_bits(priv->regmap, REG_DBG_UART, + REG_DBG_UART_SET_IDDQ, + REG_DBG_UART_SET_IDDQ); + clk_disable_unprepare(priv->clk_usb); clk_disable_unprepare(priv->clk_usb_general); -- 2.11.0