From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Mayer Subject: [PATCH 2/2] cpufreq: brcmstb-avs-cpufreq: prefer SCMI cpufreq if supported Date: Wed, 18 Apr 2018 08:56:43 -0700 Message-ID: <20180418155643.36464-3-code@mmayer.net> References: <20180418155643.36464-1-code@mmayer.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180418155643.36464-1-code@mmayer.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Viresh Kumar , "Rafael J. Wysocki" , Brian Norris , Gregory Fong , Florian Fainelli Cc: Power Management List , Linux Kernel Mailing List , Jim Quinlan , Broadcom Kernel List , Markus Mayer , ARM Kernel List List-Id: linux-pm@vger.kernel.org From: Jim Quinlan If the SCMI cpufreq driver is supported, we bail, so that the new approach can be used. Signed-off-by: Jim Quinlan Signed-off-by: Markus Mayer --- drivers/cpufreq/brcmstb-avs-cpufreq.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c index b07559b9ed99..b4861a730162 100644 --- a/drivers/cpufreq/brcmstb-avs-cpufreq.c +++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c @@ -164,6 +164,8 @@ #define BRCM_AVS_CPU_INTR "brcm,avs-cpu-l2-intr" #define BRCM_AVS_HOST_INTR "sw_intr" +#define ARM_SCMI_COMPAT "arm,scmi" + struct pmap { unsigned int mode; unsigned int p1; @@ -511,6 +513,20 @@ static int brcm_avs_prepare_init(struct platform_device *pdev) struct device *dev; int host_irq, ret; + /* + * If the SCMI cpufreq driver is supported, we bail, so that the more + * modern approach can be used. + */ + if (IS_ENABLED(CONFIG_ARM_SCMI_PROTOCOL)) { + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, ARM_SCMI_COMPAT); + if (np) { + of_node_put(np); + return -ENXIO; + } + } + dev = &pdev->dev; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) -- 2.7.4