From 5f98d0b5d3038cb3345712bc779efacaba4322f7 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Fri, 3 Jan 2014 15:55:57 -0200 Subject: mx6: clock: Pass the frequency as argument of enable_fec_anatop_clock() Provide an argument to enable_fec_anatop_clock() to specify the clock frequency that will be generated. No changes are made to mx6slevk, which uses the default 50MHz fec clock. Signed-off-by: Fabio Estevam Acked-by: Stefano Babic --- arch/arm/cpu/armv7/mx6/clock.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch/arm/cpu/armv7/mx6/clock.c') diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index f12bba294..5617a410d 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -323,7 +323,7 @@ static u32 get_mmdc_ch0_clk(void) #endif #ifdef CONFIG_FEC_MXC -int enable_fec_anatop_clock(void) +int enable_fec_anatop_clock(enum enet_freq freq) { u32 reg = 0; s32 timeout = 100000; @@ -331,7 +331,13 @@ int enable_fec_anatop_clock(void) struct anatop_regs __iomem *anatop = (struct anatop_regs __iomem *)ANATOP_BASE_ADDR; + if (freq < ENET_25MHz || freq > ENET_125MHz) + return -EINVAL; + reg = readl(&anatop->pll_enet); + reg &= ~BM_ANADIG_PLL_ENET_DIV_SELECT; + reg |= freq; + if ((reg & BM_ANADIG_PLL_ENET_POWERDOWN) || (!(reg & BM_ANADIG_PLL_ENET_LOCK))) { reg &= ~BM_ANADIG_PLL_ENET_POWERDOWN; -- cgit v1.2.3-70-g09d2