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

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

Fixes: 7cb37b7 ("ASoC: qcom: Add support for lpass hdmi driver")

Signed-off-by: Srinivasa Rao Mandadapu <[email protected]>
Reviewed-by: Stephen Boyd <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Srinivasa Rao Mandadapu

sound/soc/qcom/lpass-cpu.c

@@ -784,6 +784,8 @@ 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))