sunxi: clock: Add clock_get_pll3() helper function
Add a helper function to get the pll3 clock rate.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
index c3e04af..7c8eff9 100644
--- a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
+++ b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c
@@ -198,6 +198,15 @@
CCM_PLL3_CTRL_M(clk / 3000000), &ccm->pll3_cfg);
}
+unsigned int clock_get_pll3(void)
+{
+ struct sunxi_ccm_reg *const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ uint32_t rval = readl(&ccm->pll3_cfg);
+ int m = ((rval & CCM_PLL3_CTRL_M_MASK) >> CCM_PLL3_CTRL_M_SHIFT);
+ return 3000000 * m;
+}
+
unsigned int clock_get_pll5p(void)
{
struct sunxi_ccm_reg *const ccm =