clk: qcom: camcc-sm7150: Specify Titan GDSC power domain as a parent to IPEx and BPS

When a consumer turns on/off a power domain dependent on another power
domain in hardware, the parent power domain shall be turned on/off by
the power domain provider as well, and to get it the power domain hardware
hierarchy shall be described in the CAMCC driver.

Establish the power domain hierarchy with a Titan GDSC set as a parent of
other GDSC power domains provided by the SM7150 camera clock controller,
including IPE0/1 and BPS ones.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Imran Shaik <imran.shaik@oss.qualcomm.com>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Link: https://lore.kernel.org/r/20251021234450.2271279-5-vladimir.zapolskiy@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/clk/qcom/camcc-sm7150.c b/drivers/clk/qcom/camcc-sm7150.c
index 4a3baf5d8e85..0e072ae39ec0 100644
--- a/drivers/clk/qcom/camcc-sm7150.c
+++ b/drivers/clk/qcom/camcc-sm7150.c
@@ -1846,6 +1846,7 @@ static struct gdsc camcc_bps_gdsc = {
 		.name = "camcc_bps_gdsc",
 	},
 	.flags = HW_CTRL | POLL_CFG_GDSCR,
+	.parent = &camcc_titan_top_gdsc.pd,
 	.pwrsts = PWRSTS_OFF_ON,
 };
 
@@ -1875,6 +1876,7 @@ static struct gdsc camcc_ipe_0_gdsc = {
 		.name = "camcc_ipe_0_gdsc",
 	},
 	.flags = HW_CTRL | POLL_CFG_GDSCR,
+	.parent = &camcc_titan_top_gdsc.pd,
 	.pwrsts = PWRSTS_OFF_ON,
 };
 
@@ -1884,6 +1886,7 @@ static struct gdsc camcc_ipe_1_gdsc = {
 		.name = "camcc_ipe_1_gdsc",
 	},
 	.flags = HW_CTRL | POLL_CFG_GDSCR,
+	.parent = &camcc_titan_top_gdsc.pd,
 	.pwrsts = PWRSTS_OFF_ON,
 };