Register into DM the clocks required to properly enable USB functionality within the bootloader.
Signed-off-by: Sergiu Moga sergiu.moga@microchip.com ---
v1 -> v2: - No change
v2 -> v3: - Remove the no longer required #if CONFIG_IS_ENABLED(AT91_SAM9X60_USB)
drivers/clk/at91/sam9x60.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index 6b5486c6c9..14c2ffcac1 100644 --- 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];