drm: rockchip: rk3066_hdmi: set edid fifo address

Fix edid reading error when edid's block > 2.

Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191211203417.19448-1-jbx6244@gmail.com

diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index 8673e64..fe203d3 100644 (file)
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -641,6 +641,9 @@ 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);