diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_hdmi_cec.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/video/fbdev/msm/mdss_hdmi_cec.c b/drivers/video/fbdev/msm/mdss_hdmi_cec.c index 12a9267f3749..5fe3f710c29e 100644 --- a/drivers/video/fbdev/msm/mdss_hdmi_cec.c +++ b/drivers/video/fbdev/msm/mdss_hdmi_cec.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2010-2017, 2020 The Linux Foundation. All rights reserved. +/* Copyright (c) 2010-2017,2020-2021, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -469,8 +469,12 @@ static int hdmi_cec_enable(void *input, bool enable) } if (enable) { - /* 19.2Mhz * 0.00005 us = 950 = 0x3B6 */ - DSS_REG_W(io, HDMI_CEC_REFTIMER, (0x3B6 & 0xFFF) | BIT(16)); + /* + * 19.2Mhz * 0.00005 us = 960 = 0x3C0 + * CEC Rd/Wr logic is properly working with + * finetuned value of 0x3D4 = 51 us. + */ + DSS_REG_W(io, HDMI_CEC_REFTIMER, (0x3D4 & 0xFFF) | BIT(16)); hdmi_hw_version = DSS_REG_R(io, HDMI_VERSION); if (hdmi_hw_version >= CEC_SUPPORTED_HW_VERSION) { |