The upcoming SmartQ machines use a different base clock frequency
for the USB block, this patch allows passing it as platform data
to the driver.
Signed-off-by: Maurus Cuelenaere <mcuelenaere@xxxxxxxxx>
---
arch/arm/plat-samsung/include/plat/udc-hs.h | 8 ++++++++
drivers/usb/gadget/s3c-hsotg.c | 1 +
2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-samsung/include/plat/udc-hs.h b/arch/arm/plat-samsung/include/plat/udc-hs.h
index a22a4f2..2905344 100644
--- a/arch/arm/plat-samsung/include/plat/udc-hs.h
+++ b/arch/arm/plat-samsung/include/plat/udc-hs.h
@@ -18,12 +18,20 @@ enum s3c_hsotg_dmamode {
S3C_HSOTG_DMA_DRV, /* DMA is chosen by driver */
};
+enum s3c_hsotg_clkfreq {
+ S3C_HSOTG_CLKFREQ_48MHZ = 0,
+ S3C_HSOTG_CLKFREQ_12MHZ = 2,
+ S3C_HSOTG_CLKFREQ_24MHZ = 3,
+};
+
/**
* struct s3c_hsotg_plat - platform data for high-speed otg/udc
* @dma: Whether to use DMA or not.
* @is_osc: The clock source is an oscillator, not a crystal
+ * @clk_sel: Frequency of the clock source
*/
struct s3c_hsotg_plat {
enum s3c_hsotg_dmamode dma;
unsigned int is_osc : 1;
+ enum s3c_hsotg_clkfreq clk_sel;
};
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index 1f73b48..600b56d 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2705,6 +2705,7 @@ static void s3c_hsotg_otgreset(struct s3c_hsotg *hsotg)
mdelay(1);
osc = hsotg->plat->is_osc ? S3C_PHYCLK_EXT_OSC : 0;
+ osc |= hsotg->plat->clk_sel;
writel(osc | 0x10, S3C_PHYCLK);
--
1.7.1
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