Re: [PATCH v8 2/9] clk: qcom: gcc-msm8939: mark Venus core GDSCs as hardware controlled

[Erikas Bitovtas <xerikasxx@gmail.com>]

On 5/25/26 8:51 AM, Taniya Das wrote:
> 
> 
> On 5/22/2026 4:18 PM, Erikas Bitovtas wrote:
>>>>>   static struct clk_branch gcc_venus0_core0_vcodec0_clk = {
>>>>>       .halt_reg = 0x4c02c,
>>>>> +    .halt_check = BRANCH_HALT_SKIP,
>>> please use .halt_check = BRANCH_HALT
>>>
>> If I do that, the clock fails to power on on boot.
>> [   20.324488] ------------[ cut here ]------------
>> [   20.324520] gcc_venus0_core0_vcodec0_clk status stuck at 'off'
>> [   20.324663] WARNING: drivers/clk/qcom/clk-branch.c:88 at
> 
> 
> I am hoping the Venus driver has enabled the GDSC before requesting the
> clock enable.
> 
It does. From 3/9:
+static int vcodec_domains_enable(struct venus_core *core)
+{
+	const struct venus_resources *res = core->res;
+	struct device *pd_dev;
+	int i = 0, ret;
+
+	if (!res->vcodec_pmdomains)
+		return 0;
+
+	for (; i < res->vcodec_pmdomains_num; i++) {
+		pd_dev = core->pmdomains->pd_devs[i];
+		ret = pm_runtime_resume_and_get(pd_dev);
+		if (ret)
+			goto err;
+
+		ret = dev_pm_genpd_set_hwmode(pd_dev, true);
+		if (ret && ret != -EOPNOTSUPP) {
+			pm_runtime_put_sync(pd_dev);
+			goto err;
+		}
+	}

 static void core_put_v1(struct venus_core *core)
@@ -320,11 +410,35 @@ static int core_power_v1(struct venus_core *core,
int on)
 {
 	int ret = 0;

-	if (on == POWER_ON)
+	if (on == POWER_ON) {
+		ret = vcodec_domains_enable(core);
+		if (ret)
+			return ret;
+
 		ret = core_clks_enable(core);
-	else
+		if (ret)
+			goto fail_pmdomains;
+
+		if (!core->res->vcodec_pmdomains)
+			return 0;
+
+		ret = vcodec_clks_enable(core, core->vcodec_clks);
+		if (ret)
+			goto fail_core_clks;
+