MLK-12985 imx: mx6sx: Disable ENET clock before switching clock parent

Need to gate ENET clock when switching to a new clock parent, because the mux is not glitchless. Signed-off-by: Ye.Li <ye.li@nxp.com>

MLK-12985 imx: mx6sx: Disable ENET clock before switching clock parent
Need to gate ENET clock when switching to a new clock parent, because the mux is not glitchless. Signed-off-by: Ye.Li <ye.li@nxp.com>
Ye.Li
1 parent 9c2069ad87
Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff
arch/arm/cpu/armv7/mx6/clock.c
@@ -974,6 +974,11 @@
 	writel(reg, &anatop->pll_enet);
  
 #ifdef CONFIG_MX6SX
+	/* Disable enet system clcok before switching clock parent */
+	reg = readl(&imx_ccm->CCGR3);
+	reg &= ~MXC_CCM_CCGR3_ENET_MASK;
+	writel(reg, &imx_ccm->CCGR3);
+
 	/*
 	 * Set enet ahb clock to 200MHz
 	 * pll2_pfd2_396m-> ENET_PODF-> ENET_AHB
...	...	@@ -974,6 +974,11 @@
974	974	writel(reg, &anatop->pll_enet);
975	975
976	976	#ifdef CONFIG_MX6SX
	977	+ /* Disable enet system clcok before switching clock parent */
	978	+ reg = readl(&imx_ccm->CCGR3);
	979	+ reg &= ~MXC_CCM_CCGR3_ENET_MASK;
	980	+ writel(reg, &imx_ccm->CCGR3);
	981	+
977	982	/*
978	983	* Set enet ahb clock to 200MHz
979	984	* pll2_pfd2_396m-> ENET_PODF-> ENET_AHB