usb: dwc2: gadget: Add parameters for GREFCLK register

Added ref_clk_per and sof_cnt_wkup_alert parameters in
dwc2_core_params struct and set default values.

Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 2678dc9d559bd518e966d38aed285dbcd795dca4..655f5274e8013105ebfe361120a599846aefdc97 100644 (file)
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -393,6 +393,20 @@ enum dwc2_ep0_state {
  *                     0 - No
  *                     1 - Yes
  * @hird_threshold:    Value of BESL or HIRD Threshold.
+ * @ref_clk_per:        Indicates in terms of pico seconds the period
+ *                      of ref_clk.
+ *                     62500 - 16MHz
+ *                      58823 - 17MHz
+ *                      52083 - 19.2MHz
+ *                     50000 - 20MHz
+ *                     41666 - 24MHz
+ *                     33333 - 30MHz (default)
+ *                     25000 - 40MHz
+ * @sof_cnt_wkup_alert: Indicates in term of number of SOF's after which
+ *                      the controller should generate an interrupt if the
+ *                      device had been in L1 state until that period.
+ *                      This is used by SW to initiate Remote WakeUp in the
+ *                      controller so as to sync to the uF number from the host.
  * @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO
  *                     register.
  *                     0 - Deactivate the transceiver (default)
@@ -472,6 +486,10 @@ struct dwc2_core_params {
        u32 max_transfer_size;
        u32 ahbcfg;
 
+       /* GREFCLK parameters */
+       u32 ref_clk_per;
+       u16 sof_cnt_wkup_alert;
+
        /* Host parameters */
        bool host_dma;
        bool dma_desc_enable;

diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
index dd3c10d537e23121fa4d93b97c62815c5c3759f6..d150984406eee0cb7cbf5f36faf8888fa216b4d8 100644 (file)
--- a/drivers/usb/dwc2/params.c
+++ b/drivers/usb/dwc2/params.c
@@ -303,6 +303,8 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg)
        p->max_packet_count = hw->max_packet_count;
        p->max_transfer_size = hw->max_transfer_size;
        p->ahbcfg = GAHBCFG_HBSTLEN_INCR << GAHBCFG_HBSTLEN_SHIFT;
+       p->ref_clk_per = 33333;
+       p->sof_cnt_wkup_alert = 100;
 
        if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
            (hsotg->dr_mode == USB_DR_MODE_OTG)) {