From 6d97dc10a81062a787fcf5e5df7b88d1ea122a64 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Wed, 12 Aug 2015 17:46:50 +0800 Subject: imx: clock support enet2 anatop clock support To i.MX6SX/UL, two ethernet interfaces are supported. Add ENET2 clock support: 1. Introduce a new input parameter "fec_id", only 0 and 1 are allowed. To value 1, only i.MX6SX/UL can pass the check. 2. Modify board code who use this api to follow new api prototype. Signed-off-by: Peng Fan Cc: Heiko Schocher Cc: Fabio Estevam Cc: Stefan Roese Cc: Nikolaos Pasaloukos Cc: Stefano Babic Reviewed-by: Stefan Roese --- arch/arm/cpu/armv7/mx6/clock.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index 9cf4eece13..ba6cc75a7b 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -524,7 +524,7 @@ void enable_qspi_clk(int qspi_num) #endif #ifdef CONFIG_FEC_MXC -int enable_fec_anatop_clock(enum enet_freq freq) +int enable_fec_anatop_clock(int fec_id, enum enet_freq freq) { u32 reg = 0; s32 timeout = 100000; @@ -535,9 +535,19 @@ int enable_fec_anatop_clock(enum enet_freq freq) if (freq < ENET_25MHZ || freq > ENET_125MHZ) return -EINVAL; - reg = readl(&anatop->pll_enet); - reg &= ~BM_ANADIG_PLL_ENET_DIV_SELECT; - reg |= freq; + if (fec_id == 0) { + reg &= ~BM_ANADIG_PLL_ENET_DIV_SELECT; + reg |= BF_ANADIG_PLL_ENET_DIV_SELECT(freq); + } else if (fec_id == 1) { + /* Only i.MX6SX/UL support ENET2 */ + if (!(is_cpu_type(MXC_CPU_MX6SX) || + is_cpu_type(MXC_CPU_MX6UL))) + return -EINVAL; + reg &= ~BM_ANADIG_PLL_ENET2_DIV_SELECT; + reg |= BF_ANADIG_PLL_ENET2_DIV_SELECT(freq); + } else { + return -EINVAL; + } if ((reg & BM_ANADIG_PLL_ENET_POWERDOWN) || (!(reg & BM_ANADIG_PLL_ENET_LOCK))) { @@ -552,7 +562,10 @@ int enable_fec_anatop_clock(enum enet_freq freq) } /* Enable FEC clock */ - reg |= BM_ANADIG_PLL_ENET_ENABLE; + if (fec_id == 0) + reg |= BM_ANADIG_PLL_ENET_ENABLE; + else + reg |= BM_ANADIG_PLL_ENET2_ENABLE; reg &= ~BM_ANADIG_PLL_ENET_BYPASS; writel(reg, &anatop->pll_enet); -- cgit v1.2.1