From: Nick Chan <towinchenmi@gmail.com>
To: Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Viresh Kumar <viresh.kumar@linaro.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Asahi Linux <asahi@lists.linux.dev>,
Linux ARM Kernel Architecture
<linux-arm-kernel@lists.infradead.org>,
Linux power management <linux-pm@vger.kernel.org>,
Devicetree <devicetree@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>
Cc: Nick Chan <towinchenmi@gmail.com>
Subject: [PATCH v2 4/7] cpufreq: apple-soc: Use 32-bit read for status register
Date: Thu, 12 Dec 2024 15:03:03 +0800 [thread overview]
Message-ID: <20241212070344.3858-5-towinchenmi@gmail.com> (raw)
In-Reply-To: <20241212070344.3858-1-towinchenmi@gmail.com>
Apple A7-A9(X) SoCs requires 32-bit reads on the status register. Newer
SoCs accepts 32-bit reads on the status register as well.
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
---
drivers/cpufreq/apple-soc-cpufreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cpufreq/apple-soc-cpufreq.c b/drivers/cpufreq/apple-soc-cpufreq.c
index 90e34105b50b..b27d261fe5a6 100644
--- a/drivers/cpufreq/apple-soc-cpufreq.c
+++ b/drivers/cpufreq/apple-soc-cpufreq.c
@@ -122,7 +122,7 @@ static unsigned int apple_soc_cpufreq_get_rate(unsigned int cpu)
unsigned int pstate;
if (priv->info->cur_pstate_mask) {
- u64 reg = readq_relaxed(priv->reg_base + APPLE_DVFS_STATUS);
+ u32 reg = readl_relaxed(priv->reg_base + APPLE_DVFS_STATUS);
pstate = (reg & priv->info->cur_pstate_mask) >> priv->info->cur_pstate_shift;
} else {
--
2.47.1
next prev parent reply other threads:[~2024-12-12 7:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-12 7:02 [PATCH v2 0/7] Apple A7-A11, T2 SoC cpufreq support Nick Chan
2024-12-12 7:03 ` [PATCH v2 1/7] dt-bindings: cpufreq: apple,cluster-cpufreq: Add A7-A11, T2 compatibles Nick Chan
2024-12-12 8:25 ` Krzysztof Kozlowski
2024-12-12 7:03 ` [PATCH v2 2/7] cpufreq: apple-soc: Drop setting the PS2 field on M2+ Nick Chan
2024-12-12 7:03 ` [PATCH v2 3/7] cpufreq: apple-soc: Allow per-SoC configuration of APPLE_DVFS_CMD_PS1 Nick Chan
2024-12-12 7:03 ` Nick Chan [this message]
2024-12-12 7:03 ` [PATCH v2 5/7] cpufreq: apple-soc: Increase cluster switch timeout to 400us Nick Chan
2024-12-12 7:03 ` [PATCH v2 6/7] cpufreq: apple-soc: Set fallback transition latency to APPLE_DVFS_TRANSITION_TIMEOUT Nick Chan
2024-12-12 11:06 ` Christian Loehle
2024-12-12 11:08 ` Christian Loehle
2024-12-12 7:03 ` [PATCH v2 7/7] cpufreq: apple-soc: Add Apple A7-A8X SoC cpufreq support Nick Chan
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