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Commit aa3da3dd authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "msm: mdss: hdmi: finetune CEC_REFTIMER:REFTIMER"

parents 4d293172 6001fc30

drivers/video/fbdev/msm/mdss_hdmi_cec.c

+7 −3
Original line number Diff line number Diff line 
/* 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) {