clk: at91: sam9x60: Register the required clocks for USB

Register into DM the clocks required to properly enable USB functionality
within the bootloader.

Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>

diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index 6b5486c6c9eb3af078c967ec2d38c1b68bb5b6ea..14c2ffcac18bc306b3e985a0a8c88404733bb34b 100644 (file)
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -76,6 +76,8 @@ enum pmc_clk_ids {
        ID_QSPI                 = 18,
 
        ID_MCK_PRES             = 19,
+       ID_USBCK                = 20,
+       ID_UHPCK                = 21,
 
        ID_MAX,
 };
@@ -99,6 +101,7 @@ static const char *clk_names[] = {
        [ID_PLL_A_DIV]          = "plla_divpmcck",
        [ID_MCK_PRES]           = "mck_pres",
        [ID_MCK_DIV]            = "mck_div",
+       [ID_USBCK]              = "usbck",
 };
 
 /* Fractional PLL output range. */
@@ -171,6 +174,13 @@ static const struct clk_pcr_layout pcr_layout = {
        .pid_mask = GENMASK(6, 0),
 };
 
+/* USB clock layout */
+static const struct clk_usbck_layout usbck_layout = {
+       .offset = 0x38,
+       .usbs_mask = GENMASK(1, 0),
+       .usbdiv_mask = GENMASK(11, 8),
+};
+
 /**
  * PLL clocks description
  * @n:         clock name
@@ -266,6 +276,7 @@ static const struct {
        u8 cid;
 } sam9x60_systemck[] = {
        { .n = "ddrck",         .p = "mck_div",  .id = 2, .cid = ID_DDR, },
+       { .n = "uhpck",         .p = "usbck",    .id = 6, .cid = ID_UHPCK },
        { .n = "pck0",          .p = "prog0",    .id = 8, .cid = ID_PCK0, },
        { .n = "pck1",          .p = "prog1",    .id = 9, .cid = ID_PCK1, },
        { .n = "qspick",        .p = "mck_div",  .id = 19, .cid = ID_QSPI, },
@@ -543,6 +554,28 @@ static int sam9x60_clk_probe(struct udevice *dev)
        }
        clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MCK_DIV), c);
 
+       /* Register usbck. */
+       p[0] = clk_names[ID_PLL_A_DIV];
+       p[1] = clk_names[ID_PLL_U_DIV];
+       p[2] = clk_names[ID_MAIN_XTAL];
+       m[0] = 0;
+       m[1] = 1;
+       m[2] = 2;
+       cm[0] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_A_DIV);
+       cm[1] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_U_DIV);
+       cm[2] = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_MAIN_XTAL);
+       prepare_mux_table(clkmuxallocs, clkmuxallocindex, tmpclkmux, cm,
+                         3, fail);
+       prepare_mux_table(muxallocs, muxallocindex, tmpmux, m, 3, fail);
+       c = sam9x60_clk_register_usb(base, clk_names[ID_USBCK], p, 3,
+                                    &usbck_layout, tmpclkmux, tmpmux,
+                                    ID_USBCK);
+       if (IS_ERR(c)) {
+               ret = PTR_ERR(c);
+               goto fail;
+       }
+       clk_dm(AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_USBCK), c);
+
        /* Register programmable clocks. */
        p[0] = clk_names[ID_MD_SLCK];
        p[1] = clk_names[ID_TD_SLCK];