ASoC: qcom: lpass-cpu: Mark HDMI TX parity register as volatile

[ Upstream commit 1dd5166102e7ca91e8c5d833110333835e147ddb ]

Update LPASS_HDMI_TX_PARITY_ADDR register as volatile, to fix
dp audio failures observed with some of external monitors.

Fixes: 7cb37b7bd0d3 ("ASoC: qcom: Add support for lpass hdmi driver")

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1665825530-7593-1-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index b37f473..5e8d045 100644 (file)
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -781,6 +781,8 @@ static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
                return true;
        if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v))
                return true;
+       if (reg == LPASS_HDMI_TX_PARITY_ADDR(v))
+               return true;
 
        for (i = 0; i < v->hdmi_rdma_channels; ++i) {
                if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))