diff options
| author | Fugang Duan <B38611@freescale.com> | 2013-09-04 10:58:17 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-10-21 09:11:04 +0800 |
| commit | a9aec30dcf2aae5929bc43ada552a33c8d737967 (patch) | |
| tree | 66bb06c85a408abcd40353833e4bb7cc2b7cbfdc /arch/arm/mach-imx | |
| parent | 7f6ac89c1d1e0c654ea02c8c2dd0ee8e1ce2795f (diff) | |
ARM: imx6sl: config iomux-gpr1 to select clock for fec
Config iomux-gpr1 to select clock source for fec system clock.
Clear gpr1[14], gpr1[18-17] bit to select the fec clock source
from internal anatop PLL.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6sl.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c index c70bd7c6497..21cde21daf9 100644 --- a/arch/arm/mach-imx/mach-imx6sl.c +++ b/arch/arm/mach-imx/mach-imx6sl.c @@ -10,16 +10,37 @@ #include <linux/irqchip.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <linux/mfd/syscon.h> +#include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> +#include <linux/regmap.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include "common.h" +static void __init imx6sl_fec_init(void) +{ + struct regmap *gpr; + + /* set FEC clock from internal PLL clock source */ + gpr = syscon_regmap_lookup_by_compatible("fsl,imx6sl-iomuxc-gpr"); + if (!IS_ERR(gpr)) { + regmap_update_bits(gpr, IOMUXC_GPR1, + IMX6SL_GPR1_FEC_CLOCK_MUX2_SEL_MASK, 0); + regmap_update_bits(gpr, IOMUXC_GPR1, + IMX6SL_GPR1_FEC_CLOCK_MUX1_SEL_MASK, 0); + } else { + pr_err("failed to find fsl,imx6sl-iomux-gpr regmap\n"); + } +} + static void __init imx6sl_init_machine(void) { mxc_arch_reset_init_dt(); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + + imx6sl_fec_init(); } static void __init imx6sl_init_irq(void) |