[PATCH] drm: rockchip: rk3066_hdmi: set edid fifo address
From: Johan Jonker
Date: Wed Dec 11 2019 - 15:34:29 EST
From: Nickey Yang <nickey.yang@xxxxxxxxxxxxxx>
Fix edid reading error when edid's block > 2.
Signed-off-by: Nickey Yang <nickey.yang@xxxxxxxxxxxxxx>
Signed-off-by: Johan Jonker <jbx6244@xxxxxxxxx>
---
drivers/gpu/drm/rockchip/rk3066_hdmi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index cdb401f42..945126948 100644
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -640,6 +640,9 @@ static int rk3066_hdmi_i2c_write(struct rk3066_hdmi *hdmi, struct i2c_msg *msgs)
if (msgs->addr == DDC_ADDR)
hdmi->i2c->ddc_addr = msgs->buf[0];
+ /* Set edid fifo first address. */
+ hdmi_writeb(hdmi, HDMI_EDID_FIFO_ADDR, 0x00);
+
/* Set edid word address 0x00/0x80. */
hdmi_writeb(hdmi, HDMI_EDID_WORD_ADDR, hdmi->i2c->ddc_addr);
--
2.11.0