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(93-34-90-37.ip49.fastwebnet.it. [93.34.90.37]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-429dc18efb3sm4509841f8f.3.2025.11.04.03.59.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Nov 2025 03:59:56 -0800 (PST) Message-ID: <6909eabc.050a0220.54944.cd03@mx.google.com> X-Google-Original-Message-ID: Date: Tue, 4 Nov 2025 12:59:54 +0100 From: Christian Marangi To: Bjorn Andersson Cc: Ilia Lin , "Rafael J. Wysocki" , Viresh Kumar , Konrad Dybcio , Arnd Bergmann , Andy Shevchenko , Raag Jadav , linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/3] cpufreq: qcom-nvmem: add compatible fallback for ipq806x for no SMEM References: <20251031130835.7953-1-ansuelsmth@gmail.com> <20251031130835.7953-4-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sat, Nov 01, 2025 at 12:42:55PM -0500, Bjorn Andersson wrote: > On Fri, Oct 31, 2025 at 02:08:34PM +0100, Christian Marangi wrote: > > On some IPQ806x SoC SMEM might be not initialized by SBL. This is the > > case for some Google devices (the OnHub family) that can't make use of > > SMEM to detect the SoC ID. > > > > To handle these specific case, check if the SMEM is not initialized (by > > checking if the qcom_smem_get_soc_id returns -ENODEV) and fallback to > > OF machine compatible checking to identify the SoC variant. > > > > Notice that the checking order is important as the machine compatible > > are normally defined with the specific one following the generic SoC > > (for example compatible = "qcom,ipq8065", "qcom,ipq8064"). > > > > Signed-off-by: Christian Marangi > > Reviewed-by: Bjorn Andersson > > And as mentioned in v1, this (cpufreq) patch can be merged independently > of the first two patches. So please merge it through the cpufreq tree. > I will send a new revision just for this patch so I can use of_match_node() Should be ok since it hasn't been picked right? > > > --- > > drivers/cpufreq/qcom-cpufreq-nvmem.c | 17 +++++++++++++++-- > > 1 file changed, 15 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c > > index 3a8ed723a23e..5a9bd780a4f3 100644 > > --- a/drivers/cpufreq/qcom-cpufreq-nvmem.c > > +++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c > > @@ -257,8 +257,8 @@ static int qcom_cpufreq_ipq8064_name_version(struct device *cpu_dev, > > char **pvs_name, > > struct qcom_cpufreq_drv *drv) > > { > > + int msm_id = -1, ret = 0; > > int speed = 0, pvs = 0; > > - int msm_id, ret = 0; > > u8 *speedbin; > > size_t len; > > > > @@ -275,8 +275,21 @@ static int qcom_cpufreq_ipq8064_name_version(struct device *cpu_dev, > > get_krait_bin_format_a(cpu_dev, &speed, &pvs, speedbin); > > > > ret = qcom_smem_get_soc_id(&msm_id); > > - if (ret) > > + if (ret == -ENODEV) { > > + /* Fallback to compatible match with no SMEM initialized */ > > + ret = 0; > > + if (of_machine_is_compatible("qcom,ipq8062")) > > + msm_id = QCOM_ID_IPQ8062; > > + else if (of_machine_is_compatible("qcom,ipq8065") || > > + of_machine_is_compatible("qcom,ipq8069")) > > + msm_id = QCOM_ID_IPQ8065; > > + else if (of_machine_is_compatible("qcom,ipq8064") || > > + of_machine_is_compatible("qcom,ipq8066") || > > + of_machine_is_compatible("qcom,ipq8068")) > > + msm_id = QCOM_ID_IPQ8064; > > + } else if (ret) { > > goto exit; > > + } > > > > switch (msm_id) { > > case QCOM_ID_IPQ8062: > > -- > > 2.51.0 > > -- Ansuel