iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

phy: rockchip-snps-pcie3: fix clearing PHP_GRF_PCIESEL_CON bits

Browse Source 
Currently the PCIe v3 PHY driver only sets the pcie1ln_sel bits, but
does not clear them because of an incorrect write mask. This fixes up
the issue by using a newly introduced constant for the write mask.

While at it also introduces a proper GENMASK based constant for the
PCIE30_PHY_MODE.

Fixes: 2e9bffc4f713 ("phy: rockchip: Support PCIe v3")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20240404-rk3588-pcie-bifurcation-fixes-v1-2-9907136eeafd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Sebastian Reichel 2024-04-04 19:11:27 +02:00 committed by Vinod Koul
parent f8020dfb31
commit 55491a5fa1
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/phy/rockchip/phy-rockchip-snps-pcie3.c
View File

@ -40,6 +40,8 @@
#define RK3588_BIFURCATION_LANE_0_1 BIT(0)
#define RK3588_BIFURCATION_LANE_2_3 BIT(1)
#define RK3588_LANE_AGGREGATION BIT(2)
#define RK3588_PCIE1LN_SEL_EN (GENMASK(1, 0) << 16)
#define RK3588_PCIE30_PHY_MODE_EN (GENMASK(2, 0) << 16)
struct rockchip_p3phy_ops;
@ -149,14 +151,15 @@ static int rockchip_p3phy_rk3588_init(struct rockchip_p3phy_priv *priv)
}
reg = mode;
regmap_write(priv->phy_grf, RK3588_PCIE3PHY_GRF_CMN_CON0, (0x7<<16) | reg);
regmap_write(priv->phy_grf, RK3588_PCIE3PHY_GRF_CMN_CON0,
RK3588_PCIE30_PHY_MODE_EN | reg);
/* Set pcie1ln_sel in PHP_GRF_PCIESEL_CON */
if (!IS_ERR(priv->pipe_grf)) {
reg = mode & 3;
reg = mode & (RK3588_BIFURCATION_LANE_0_1 | RK3588_BIFURCATION_LANE_2_3);
if (reg)
regmap_write(priv->pipe_grf, PHP_GRF_PCIESEL_CON,
(reg << 16) | reg);
RK3588_PCIE1LN_SEL_EN | reg);
}
reset_control_deassert(priv->p30phy);