From: Florian Fainelli <f.fainelli@gmail.com> To: linux-kernel@vger.kernel.org Cc: Florian Fainelli <f.fainelli@gmail.com>, Guenter Roeck <linux@roeck-us.net>, Wim Van Sebroeck <wim@linux-watchdog.org>, Rob Herring <robh+dt@kernel.org>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, bcm-kernel-feedback-list@broadcom.com (maintainer:BROADCOM BCM63XX ARM ARCHITECTURE), Justin Chen <justinpopo6@gmail.com>, linux-watchdog@vger.kernel.org (open list:WATCHDOG DEVICE DRIVERS), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-mips@vger.kernel.org (open list:MIPS), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM63XX ARM ARCHITECTURE) Subject: [PATCH v5 3/7] watchdog: bcm7038_wdt: Support platform data configuration Date: Fri, 12 Nov 2021 14:46:32 -0800 [thread overview] Message-ID: <20211112224636.395101-4-f.fainelli@gmail.com> (raw) In-Reply-To: <20211112224636.395101-1-f.fainelli@gmail.com> The BCM7038 watchdog driver needs to be able to obtain a specific clock name on BCM63xx platforms which is the "periph" clock ticking at 50MHz. make it possible to specify the clock name to obtain via platform data. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/watchdog/bcm7038_wdt.c | 8 +++++++- include/linux/platform_data/bcm7038_wdt.h | 8 ++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/bcm7038_wdt.h diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c index acaaa0005d5b..506cd7ef9c77 100644 --- a/drivers/watchdog/bcm7038_wdt.c +++ b/drivers/watchdog/bcm7038_wdt.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> +#include <linux/platform_data/bcm7038_wdt.h> #include <linux/pm.h> #include <linux/watchdog.h> @@ -133,8 +134,10 @@ static void bcm7038_clk_disable_unprepare(void *data) static int bcm7038_wdt_probe(struct platform_device *pdev) { + struct bcm7038_wdt_platform_data *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev; struct bcm7038_watchdog *wdt; + const char *clk_name = NULL; int err; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); @@ -147,7 +150,10 @@ static int bcm7038_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - wdt->clk = devm_clk_get(dev, NULL); + if (pdata && pdata->clk_name) + clk_name = pdata->clk_name; + + wdt->clk = devm_clk_get(dev, clk_name); /* If unable to get clock, use default frequency */ if (!IS_ERR(wdt->clk)) { err = clk_prepare_enable(wdt->clk); diff --git a/include/linux/platform_data/bcm7038_wdt.h b/include/linux/platform_data/bcm7038_wdt.h new file mode 100644 index 000000000000..e18cfd9ec8f9 --- /dev/null +++ b/include/linux/platform_data/bcm7038_wdt.h @@ -0,0 +1,8 @@ +#ifndef __BCM7038_WDT_PDATA_H +#define __BCM7038_WDT_PDATA_H + +struct bcm7038_wdt_platform_data { + const char *clk_name; +}; + +#endif /* __BCM7038_WDT_PDATA_H */ -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Florian Fainelli <f.fainelli@gmail.com> To: linux-kernel@vger.kernel.org Cc: Florian Fainelli <f.fainelli@gmail.com>, Guenter Roeck <linux@roeck-us.net>, Wim Van Sebroeck <wim@linux-watchdog.org>, Rob Herring <robh+dt@kernel.org>, Thomas Bogendoerfer <tsbogend@alpha.franken.de>, bcm-kernel-feedback-list@broadcom.com (maintainer:BROADCOM BCM63XX ARM ARCHITECTURE), Justin Chen <justinpopo6@gmail.com>, linux-watchdog@vger.kernel.org (open list:WATCHDOG DEVICE DRIVERS), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-mips@vger.kernel.org (open list:MIPS), linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM63XX ARM ARCHITECTURE) Subject: [PATCH v5 3/7] watchdog: bcm7038_wdt: Support platform data configuration Date: Fri, 12 Nov 2021 14:46:32 -0800 [thread overview] Message-ID: <20211112224636.395101-4-f.fainelli@gmail.com> (raw) In-Reply-To: <20211112224636.395101-1-f.fainelli@gmail.com> The BCM7038 watchdog driver needs to be able to obtain a specific clock name on BCM63xx platforms which is the "periph" clock ticking at 50MHz. make it possible to specify the clock name to obtain via platform data. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- drivers/watchdog/bcm7038_wdt.c | 8 +++++++- include/linux/platform_data/bcm7038_wdt.h | 8 ++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) create mode 100644 include/linux/platform_data/bcm7038_wdt.h diff --git a/drivers/watchdog/bcm7038_wdt.c b/drivers/watchdog/bcm7038_wdt.c index acaaa0005d5b..506cd7ef9c77 100644 --- a/drivers/watchdog/bcm7038_wdt.c +++ b/drivers/watchdog/bcm7038_wdt.c @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> +#include <linux/platform_data/bcm7038_wdt.h> #include <linux/pm.h> #include <linux/watchdog.h> @@ -133,8 +134,10 @@ static void bcm7038_clk_disable_unprepare(void *data) static int bcm7038_wdt_probe(struct platform_device *pdev) { + struct bcm7038_wdt_platform_data *pdata = pdev->dev.platform_data; struct device *dev = &pdev->dev; struct bcm7038_watchdog *wdt; + const char *clk_name = NULL; int err; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); @@ -147,7 +150,10 @@ static int bcm7038_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - wdt->clk = devm_clk_get(dev, NULL); + if (pdata && pdata->clk_name) + clk_name = pdata->clk_name; + + wdt->clk = devm_clk_get(dev, clk_name); /* If unable to get clock, use default frequency */ if (!IS_ERR(wdt->clk)) { err = clk_prepare_enable(wdt->clk); diff --git a/include/linux/platform_data/bcm7038_wdt.h b/include/linux/platform_data/bcm7038_wdt.h new file mode 100644 index 000000000000..e18cfd9ec8f9 --- /dev/null +++ b/include/linux/platform_data/bcm7038_wdt.h @@ -0,0 +1,8 @@ +#ifndef __BCM7038_WDT_PDATA_H +#define __BCM7038_WDT_PDATA_H + +struct bcm7038_wdt_platform_data { + const char *clk_name; +}; + +#endif /* __BCM7038_WDT_PDATA_H */ -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-11-12 22:46 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-12 22:46 [PATCH v5 0/7] Removal of bcm63xx-wdt Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 1/7] dt-bindings: watchdog: convert Broadcom's WDT to the json-schema Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 2/7] dt-bindings: watchdog: Add BCM6345 compatible to BCM7038 binding Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-17 13:48 ` Guenter Roeck 2021-11-17 13:48 ` Guenter Roeck 2021-11-12 22:46 ` Florian Fainelli [this message] 2021-11-12 22:46 ` [PATCH v5 3/7] watchdog: bcm7038_wdt: Support platform data configuration Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 4/7] watchdog: Allow building BCM7038_WDT for BCM63XX Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 5/7] watchdog: bcm7038_wdt: Add platform device id for bcm63xx-wdt Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 6/7] MIPS: BCM63XX: Provide platform data to watchdog device Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-11-12 22:46 ` [PATCH v5 7/7] watchdog: Remove BCM63XX_WDT Florian Fainelli 2021-11-12 22:46 ` Florian Fainelli 2021-12-03 20:07 ` [PATCH v5 0/7] Removal of bcm63xx-wdt Florian Fainelli 2021-12-03 20:07 ` Florian Fainelli 2021-12-03 20:24 ` Guenter Roeck 2021-12-03 20:24 ` Guenter Roeck
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