diff options
| author | Lucas Stach <l.stach@pengutronix.de> | 2022-09-02 16:58:04 +0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2022-09-17 16:30:54 +0800 |
| commit | 5506018d3dec41e6678efb92b836586e9ee1d628 (patch) | |
| tree | 429a9894cd0f54b5c2d5491653842d420f9be6f5 /drivers/soc/imx | |
| parent | a1a5f15f7f6cb5c291f072af843305638c935be6 (diff) | |
| download | linux-5506018d3dec41e6678efb92b836586e9ee1d628.tar.bz2 | |
soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets
Dessert the PHY reset when powering up the domain and put it back
into reset when the domain is powered down.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/soc/imx')
| -rw-r--r-- | drivers/soc/imx/imx8mp-blk-ctrl.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soc/imx/imx8mp-blk-ctrl.c b/drivers/soc/imx/imx8mp-blk-ctrl.c index 527d45d12a54..ccb30c6cdc7e 100644 --- a/drivers/soc/imx/imx8mp-blk-ctrl.c +++ b/drivers/soc/imx/imx8mp-blk-ctrl.c @@ -19,6 +19,8 @@ #define GPR_REG0 0x0 #define PCIE_CLOCK_MODULE_EN BIT(0) #define USB_CLOCK_MODULE_EN BIT(1) +#define PCIE_PHY_APB_RST BIT(4) +#define PCIE_PHY_INIT_RST BIT(5) struct imx8mp_blk_ctrl_domain; @@ -81,6 +83,10 @@ static void imx8mp_hsio_blk_ctrl_power_on(struct imx8mp_blk_ctrl *bc, case IMX8MP_HSIOBLK_PD_PCIE: regmap_set_bits(bc->regmap, GPR_REG0, PCIE_CLOCK_MODULE_EN); break; + case IMX8MP_HSIOBLK_PD_PCIE_PHY: + regmap_set_bits(bc->regmap, GPR_REG0, + PCIE_PHY_APB_RST | PCIE_PHY_INIT_RST); + break; default: break; } @@ -96,6 +102,10 @@ static void imx8mp_hsio_blk_ctrl_power_off(struct imx8mp_blk_ctrl *bc, case IMX8MP_HSIOBLK_PD_PCIE: regmap_clear_bits(bc->regmap, GPR_REG0, PCIE_CLOCK_MODULE_EN); break; + case IMX8MP_HSIOBLK_PD_PCIE_PHY: + regmap_clear_bits(bc->regmap, GPR_REG0, + PCIE_PHY_APB_RST | PCIE_PHY_INIT_RST); + break; default: break; } |