diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
index 3332399c7fd7..098301880c26 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
@@ -737,11 +737,9 @@ static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 	 * don't register a pclk_mux clock and just use post_out_div instead
 	 */
 	if (pll_7nm->phy->cphy_mode) {
-		u32 data;
-
-		data = readl(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1);
-		writel(data | 3, pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1);
-
+		dsi_pll_cmn_clk_cfg1_update(pll_7nm,
+					    DSI_7nm_PHY_CMN_CLK_CFG1_DSICLK_SEL__MASK,
+					    DSI_7nm_PHY_CMN_CLK_CFG1_DSICLK_SEL(3));
 		phy_pll_out_dsi_parent = pll_post_out_div;
 	} else {
 		snprintf(clk_name, sizeof(clk_name), "dsi%d_pclk_mux", pll_7nm->phy->id);
diff --git a/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml b/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml
index 35f7f40e405b..d2c8c46bb041 100644
--- a/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml
+++ b/drivers/gpu/drm/msm/registers/display/dsi_phy_7nm.xml
@@ -17,6 +17,7 @@ xsi:schemaLocation="https://gitlab.freedesktop.org/freedreno/ rules-fd.xsd">
 		<bitfield name="CLK_EN" pos="5" type="boolean"/>
 		<bitfield name="CLK_EN_SEL" pos="4" type="boolean"/>
 		<bitfield name="BITCLK_SEL" low="2" high="3" type="uint"/>
+		<bitfield name="DSICLK_SEL" low="0" high="1" type="uint"/>
 	</reg32>
 	<reg32 offset="0x00018" name="GLBL_CTRL"/>
 	<reg32 offset="0x0001c" name="RBUF_CTRL"/>