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([59.188.211.160]) by smtp.googlemail.com with ESMTPSA id d9443c01a7336-218a1dcb3ffsm79202565ad.75.2024.12.18.10.29.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Dec 2024 10:29:11 -0800 (PST) From: Nick Chan To: Hector Martin , Sven Peter , Alyssa Rosenzweig , "Rafael J . Wysocki" , Viresh Kumar , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Asahi Linux , Linux ARM Kernel Architecture , Linux power management , Devicetree , LKML Cc: Nick Chan Subject: [PATCH v3 4/7] cpufreq: apple-soc: Use 32-bit read for status register Date: Thu, 19 Dec 2024 02:25:06 +0800 Message-ID: <20241218182834.22334-5-towinchenmi@gmail.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241218182834.22334-1-towinchenmi@gmail.com> References: <20241218182834.22334-1-towinchenmi@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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-so= c-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; =20 if (priv->info->cur_pstate_mask) { - u64 reg =3D readq_relaxed(priv->reg_base + APPLE_DVFS_STATUS); + u32 reg =3D readl_relaxed(priv->reg_base + APPLE_DVFS_STATUS); =20 pstate =3D (reg & priv->info->cur_pstate_mask) >> priv->info->cur_pstat= e_shift; } else { --=20 2.47.1