clk: at91: allow setting PMC_AUDIOPINCK clock parents via DT

Make AUDIOPINCK accessible via phandle to select it
as peripheral clock parent using assigned-clock-parents in DT
where available.
Signed-off-by: Zixun LI <admin@hifiphile.com>
Reviewed-by: Claudiu Beznea <Claudiu.Beznea@microchip.com>
Link: https://lore.kernel.org/r/20220111142051.37957-1-admin@hifiphile.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/at91/sama5d2.c

@@ -168,7 +168,7 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
 	if (IS_ERR(regmap))
 		return;
 
-	sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPLLCK + 1,
+	sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPINCK + 1,
 					nck(sama5d2_systemck),
 					nck(sama5d2_periph32ck),
 					nck(sama5d2_gck), 3);
@@ -216,6 +216,8 @@ static void __init sama5d2_pmc_setup(struct device_node *np)
 	if (IS_ERR(hw))
 		goto err_free;
 
+	sama5d2_pmc->chws[PMC_AUDIOPINCK] = hw;
+
 	hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck",
 					     "audiopll_fracck");
 	if (IS_ERR(hw))

include/dt-bindings/clock/at91.h

@@ -24,6 +24,7 @@
 #define PMC_PLLACK		7
 #define PMC_PLLBCK		8
 #define PMC_AUDIOPLLCK		9
+#define PMC_AUDIOPINCK		10
 
 /* SAMA7G5 */
 #define PMC_CPUPLL		(PMC_MAIN + 1)