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>
---
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 9ab67a6..d3f6e6b 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)
@@ -403,11 +401,6 @@ 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) {
--
2.6.3
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