rk30: reset: pll enter slow mode when reset

slow down core periph. fix unable to boot sometime.

diff --git a/arch/arm/mach-rk30/reset.c b/arch/arm/mach-rk30/reset.c
index e2a22ba3eb05476dd99830c7cfb8d20d9490ca12..d86811c21d134b074f0da2a718050a5f4452086c 100644 (file)
--- a/arch/arm/mach-rk30/reset.c
+++ b/arch/arm/mach-rk30/reset.c
@@ -29,6 +29,8 @@ static void rk30_arch_reset(char mode, const char *cmd)
        dsb();
        /* disable remap */
        writel_relaxed(1 << (12 + 16), RK30_GRF_BASE + GRF_SOC_CON0);
+       /* pll enter slow mode */
+       writel_relaxed(PLL_MODE_SLOW(APLL_ID) | PLL_MODE_SLOW(CPLL_ID) | PLL_MODE_SLOW(GPLL_ID), RK30_CRU_BASE + CRU_MODE_CON);
        dsb();
        writel_relaxed(0xeca8, RK30_CRU_BASE + CRU_GLB_SRST_SND);
        dsb();