[PATCH v4 05/19] clk: at91: sam9x60: Add initial setup of UPLL and USBCK rates

[Sergiu Moga]

In order for some of the functionalities, such as the USB clocks,
to work properly we need some clocks to be properly initialised
at the very beginning of booting.

Signed-off-by: Sergiu Moga <sergiu.m...@microchip.com>
---


v1 -> v2:
- Adapted according to the additional 04/19 PATCH, now making use of
`at91_clk_setup`



v2 -> v4:
- No change




 drivers/clk/at91/sam9x60.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c
index 14c2ffcac1..e2f72446d5 100644
--- a/drivers/clk/at91/sam9x60.c
+++ b/drivers/clk/at91/sam9x60.c
@@ -378,6 +378,31 @@ static const struct {
        { .n = "dbgu_gclk",   .id = 47, },
 };
 
+/**
+ * Clock setup description
+ * @cid:       clock id corresponding to clock subsystem
+ * @pid:       parent clock id corresponding to clock subsystem
+ * @rate:      clock rate
+ * @prate:     parent rate
+ */
+static const struct pmc_clk_setup sam9x60_clk_setup[] = {
+       {
+               .cid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_U_FRAC),
+               .rate = 960000000,
+       },
+
+       {
+               .cid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_U_DIV),
+               .rate = 480000000,
+       },
+
+       {
+               .cid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_USBCK),
+               .pid = AT91_TO_CLK_ID(PMC_TYPE_CORE, ID_PLL_U_DIV),
+               .rate = 48000000,
+       },
+};
+
 #define prepare_mux_table(_allocs, _index, _dst, _src, _num, _label)   \
        do {                                                            \
                int _i;                                                 \
@@ -668,6 +693,11 @@ static int sam9x60_clk_probe(struct udevice *dev)
                clk_dm(AT91_TO_CLK_ID(PMC_TYPE_GCK, sam9x60_gck[i].id), c);
        }
 
+       /* Setup clocks. */
+       ret = at91_clk_setup(sam9x60_clk_setup, ARRAY_SIZE(sam9x60_clk_setup));
+       if (ret)
+               goto fail;
+
        return 0;
 
 fail:
-- 
2.34.1