clk: mediatek: clk-mt8195-vdo0: Set rate on vdo0_dp_intf0_dp_intf's p…

…arent

[ Upstream commit 3f0dadd ]

Add the CLK_SET_RATE_PARENT flag to the CLK_VDO0_DP_INTF0_DP_INTF
clock: this is required to trigger clock source selection on
CLK_TOP_EDP, while avoiding to manage the enablement of the former
separately from the latter in the displayport driver.

Fixes: 70282c9 ("clk: mediatek: Add MT8195 vdosys0 clock support")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>

Link: https://lore.kernel.org/r/20220816193257.658487-2-nfraprado@collabora.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/clk/mediatek/clk-mt8195-vdo0.c

@@ -37,6 +37,10 @@ static const struct mtk_gate_regs vdo0_2_cg_regs = {
 #define GATE_VDO0_2(_id, _name, _parent, _shift)			\
 	GATE_MTK(_id, _name, _parent, &vdo0_2_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
 
+#define GATE_VDO0_2_FLAGS(_id, _name, _parent, _shift, _flags)		\
+	GATE_MTK_FLAGS(_id, _name, _parent, &vdo0_2_cg_regs, _shift,	\
+		       &mtk_clk_gate_ops_setclr, _flags)
+
 static const struct mtk_gate vdo0_clks[] = {
 	/* VDO0_0 */
 	GATE_VDO0_0(CLK_VDO0_DISP_OVL0, "vdo0_disp_ovl0", "top_vpp", 0),
@@ -85,7 +89,8 @@ static const struct mtk_gate vdo0_clks[] = {
 	/* VDO0_2 */
 	GATE_VDO0_2(CLK_VDO0_DSI0_DSI, "vdo0_dsi0_dsi", "top_dsi_occ", 0),
 	GATE_VDO0_2(CLK_VDO0_DSI1_DSI, "vdo0_dsi1_dsi", "top_dsi_occ", 8),
-	GATE_VDO0_2(CLK_VDO0_DP_INTF0_DP_INTF, "vdo0_dp_intf0_dp_intf", "top_edp", 16),
+	GATE_VDO0_2_FLAGS(CLK_VDO0_DP_INTF0_DP_INTF, "vdo0_dp_intf0_dp_intf",
+			  "top_edp", 16, CLK_SET_RATE_PARENT),
 };
 
 static int clk_mt8195_vdo0_probe(struct platform_device *pdev)