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hdmitx: fix sda hold low issue [1/1]

Browse Source 
PD#SWPL-8231

Problem:
When HDMI cable plugin, the SDA may hold low forever or for short time.

Solution:
Add sw_reset_flt reset to resolve hold low forever issue

Verify:
G12/Dongle

Change-Id: I53bbf704bb48a2cd3cc2ebef1444c69ad1623e87
Signed-off-by: Zongdong Jiao <zongdong.jiao@amlogic.com>
This commit is contained in:
Zongdong Jiao
2019-10-25 16:29:51 +08:00
committed by Luke Go
parent 7ae81236af
commit 3cdf2534fb
1 changed files with 5 additions and 1 deletions
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6
drivers/amlogic/media/vout/hdmitx/hdmi_tx_20/hw/hdmi_tx_hw.c
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@@ -4944,8 +4944,12 @@ static int hdmitx_cntl_ddc(struct hdmitx_dev *hdev, unsigned int cmd,
hdmitx_hdcp_opr(1);
hdcp_start_timer(hdev);
}
if (argv == HDCP14_OFF)
if (argv == HDCP14_OFF) {
hdmitx_set_reg_bits(HDMITX_TOP_SW_RESET, 1, 6, 1);
usleep_range(1000, 2000);
hdmitx_set_reg_bits(HDMITX_TOP_SW_RESET, 0, 6, 1);
hdmitx_hdcp_opr(4);
}
if (argv == HDCP22_ON) {
if (hdev->topo_info)
hdev->topo_info->hdcp_ver = 2;