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drm/rockchip/rk628: combtxphy: reducing DUAL LVDS power consumption

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Signed-off-by: Guochun Huang <hero.huang@rock-chips.com>
Change-Id: I831dc7879f8f4656e9db63c629c37cc5709d3e35
This commit is contained in:
Guochun Huang
2021-07-22 11:29:28 +08:00
committed by Tao Huang
parent e261251240
commit 5aa16e093b
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/rockchip/rk628/rk628_combtxphy.c
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@@ -59,6 +59,10 @@
#define SW_TX_CTL_CON5(x) UPDATE(x, 10, 10)
#define SW_TX_CTL_CON4_MASK GENMASK(9, 8)
#define SW_TX_CTL_CON4(x) UPDATE(x, 9, 8)
#define BYPASS_095V_LDO_MASK BIT(3)
#define BYPASS_095V_LDO(x) UPDATE(x, 3, 3)
#define TX_COM_VOLT_ADJ_MASK GENMASK(2, 0)
#define TX_COM_VOLT_ADJ(x) UPDATE(x, 2, 0)
#define COMBTXPHY_CON8 REG(0x0020)
#define COMBTXPHY_CON9 REG(0x0024)
#define SW_DSI_FSET_EN_MASK BIT(29)
@@ -142,8 +146,13 @@ static int rk628_combtxphy_lvds_power_on(struct rk628_combtxphy *combtxphy)
u32 val;
int ret;
/* Adjust terminal resistance 133 ohm, bypass 0.95v ldo for driver. */
regmap_update_bits(combtxphy->regmap, COMBTXPHY_CON7,
SW_TX_MODE_MASK, SW_TX_MODE(3));
SW_TX_RTERM_MASK | SW_TX_MODE_MASK |
BYPASS_095V_LDO_MASK | TX_COM_VOLT_ADJ_MASK,
SW_TX_RTERM(6) | SW_TX_MODE(3) |
BYPASS_095V_LDO(1) | TX_COM_VOLT_ADJ(0));
regmap_write(combtxphy->regmap, COMBTXPHY_CON10,
TX7_CKDRV_EN | TX2_CKDRV_EN);
regmap_update_bits(combtxphy->regmap, COMBTXPHY_CON0,