diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 73ca24c0a08b..8e5415c9234f 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -594,7 +594,7 @@ static bool lpass_hdmi_regmap_writeable(struct device *dev, unsigned int reg)
 			return true;
 	}
 
-	for (i = 0; i < v->rdma_channels; ++i) {
+	for (i = 0; i < v->hdmi_rdma_channels; ++i) {
 		if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
 			return true;
 		if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
@@ -640,7 +640,7 @@ static bool lpass_hdmi_regmap_readable(struct device *dev, unsigned int reg)
 	if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v))
 		return true;
 
-	for (i = 0; i < v->rdma_channels; ++i) {
+	for (i = 0; i < v->hdmi_rdma_channels; ++i) {
 		if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
 			return true;
 		if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
@@ -667,7 +667,7 @@ static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
 	if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v))
 		return true;
 
-	for (i = 0; i < v->rdma_channels; ++i) {
+	for (i = 0; i < v->hdmi_rdma_channels; ++i) {
 		if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))
 			return true;
 	}
@@ -817,7 +817,7 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
 		}
 
 		lpass_hdmi_regmap_config.max_register = LPAIF_HDMI_RDMAPER_REG(variant,
-					variant->hdmi_rdma_channels);
+					variant->hdmi_rdma_channels - 1);
 		drvdata->hdmiif_map = devm_regmap_init_mmio(dev, drvdata->hdmiif,
 					&lpass_hdmi_regmap_config);
 		if (IS_ERR(drvdata->hdmiif_map)) {
diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
index 735c9dac28f2..8c168d3c589e 100644
--- a/sound/soc/qcom/lpass-sc7180.c
+++ b/sound/soc/qcom/lpass-sc7180.c
@@ -171,7 +171,7 @@ static struct lpass_variant sc7180_data = {
 	.rdma_channels		= 5,
 	.hdmi_rdma_reg_base		= 0x64000,
 	.hdmi_rdma_reg_stride	= 0x1000,
-	.hdmi_rdma_channels		= 3,
+	.hdmi_rdma_channels		= 4,
 	.dmactl_audif_start	= 1,
 	.wrdma_reg_base		= 0x18000,
 	.wrdma_reg_stride	= 0x1000,