From: Chris Zhong <zyw@xxxxxxxxxxxxxx> There are 2 Type-c PHYs in RK3399, but only one DP controller. Hence only one PHY can connect to DP controller at one time, the other should be disconnected. The GRF_SOC_CON26 register has a switch bit to do it, set this bit means enable PHY 1, clear this bit means enable PHY 0. If the board has 2 Type-C ports, the DP driver get the phy id from devm_of_phy_get_by_index, and then control this switch according to this id. But some others board only has one Type-C port, it may be PHY 0 or PHY 1. The dts node id can not tell us the correct PHY id. Hence move this switch to PHY driver, the PHY driver can distinguish between PHY 0 and PHY 1, and then write the correct register bit. Signed-off-by: Chris Zhong <zyw@xxxxxxxxxxxxxx> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> --- Changes since v2: - None. Changes since v1: - This patch is new on these series and is related to [5/6] so I included to this series. Like [5/6] the patch was send some time ago [1] but got stuck, so it's also and attempt to revive it. [1] https://lkml.org/lkml/2017/2/10/74 drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index ec999d9f15f6..c6fbdcd87c16 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -43,8 +43,6 @@ #define GRF_SOC_CON9 0x6224 #define DP_SEL_VOP_LIT BIT(12) #define GRF_SOC_CON26 0x6268 -#define UPHY_SEL_BIT 3 -#define UPHY_SEL_MASK BIT(19) #define DPTX_HPD_SEL (3 << 12) #define DPTX_HPD_DEL (2 << 12) #define DPTX_HPD_SEL_MASK (3 << 28) @@ -394,11 +392,6 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) union extcon_property_value property; int ret; - ret = cdn_dp_grf_write(dp, GRF_SOC_CON26, - (port->id << UPHY_SEL_BIT) | UPHY_SEL_MASK); - if (ret) - return ret; - if (!port->phy_enabled) { ret = phy_power_on(port->phy); if (ret) { -- 2.15.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
