[PATCH 3/8] usb: bdc: Add clock enable for new chips with a separate BDC clock
From: Al Cooper <hidden>
Date: 2017-06-27 18:24:33
Also in:
lkml
Subsystem:
broadcom bdc driver, the rest, usb subsystem · Maintainers:
Justin Chen, Al Cooper, Linus Torvalds, Greg Kroah-Hartman
Newer SoC's have added a BDC clock to the Device Tree, so get and enable it. Signed-off-by: Al Cooper <redacted> Signed-off-by: Florian Fainelli <redacted> --- drivers/usb/gadget/udc/bdc/bdc_core.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
index ccb9c21..3bd82d2 100644
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c@@ -27,6 +27,7 @@ #include <linux/moduleparam.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/clk.h> #include "bdc.h" #include "bdc_dbg.h"
@@ -452,8 +453,22 @@ static int bdc_probe(struct platform_device *pdev) int irq; u32 temp; struct device *dev = &pdev->dev; + struct clk *clk; dev_dbg(dev, "%s()\n", __func__); + + clk = devm_clk_get(dev, "sw_usbd"); + if (IS_ERR(clk)) { + dev_info(dev, "Clock not found in Device Tree\n"); + clk = NULL; + } + + ret = clk_prepare_enable(clk); + if (ret) { + dev_err(dev, "could not enable clock\n"); + return ret; + } + bdc = devm_kzalloc(dev, sizeof(*bdc), GFP_KERNEL); if (!bdc) return -ENOMEM;
--
1.9.0.138.g2de3478
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