linux-kernel - [PATCH v2 09/11] cpufreq: scmi: Add support to parse domain-id using #power-domain-cells

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Date:   Thu, 13 Jul 2023 16:17:36 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Sudeep Holla <sudeep.holla@....com>,
        Cristian Marussi <cristian.marussi@....com>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     Nikunj Kela <nkela@...cinc.com>,
        Prasad Sodagudi <psodagud@...cinc.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Ulf Hansson <ulf.hansson@...aro.org>, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 09/11] cpufreq: scmi: Add support to parse domain-id using #power-domain-cells

The performance domain-id can be described in DT using the power-domains
property or the clock property. The latter is already supported, so let's
add support for the power-domains too.

Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---

Changes in v2:
	- New patch.

---
 drivers/cpufreq/scmi-cpufreq.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/scmi-cpufreq.c b/drivers/cpufreq/scmi-cpufreq.c
index 78f53e388094..b42f43d9bd89 100644
--- a/drivers/cpufreq/scmi-cpufreq.c
+++ b/drivers/cpufreq/scmi-cpufreq.c
@@ -72,13 +72,19 @@ static unsigned int scmi_cpufreq_fast_switch(struct cpufreq_policy *policy,
 
 static int scmi_cpu_domain_id(struct device *cpu_dev)
 {
-	struct of_phandle_args clkspec;
+	struct of_phandle_args domain_id;
 
 	if (of_parse_phandle_with_args(cpu_dev->of_node, "clocks",
-				       "#clock-cells", 0, &clkspec))
-		return -EINVAL;
+				       "#clock-cells", 0, &domain_id)) {
 
-	return clkspec.args[0];
+		if (of_parse_phandle_with_args(cpu_dev->of_node,
+					       "power-domains",
+					       "#power-domain-cells", 0,
+					       &domain_id))
+			return -EINVAL;
+	}
+
+	return domain_id.args[0];
 }
 
 static int
-- 
2.34.1