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ARM: imx6sl: config iomux-gpr1 to select clock for fec

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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>
This commit is contained in:
Fugang Duan 2013-09-04 10:58:17 +08:00 • committed by Shawn Guo
parent 7f6ac89c1d
commit a9aec30dcf
1 changed files with 21 additions and 0 deletions
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21
arch/arm/mach-imx/mach-imx6sl.c
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@ -10,16 +10,37 @@
#include <linux/irqchip.h> #include <linux/irqchip.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/of_platform.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/arch.h>
#include <asm/mach/map.h> #include <asm/mach/map.h>
#include "common.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) static void __init imx6sl_init_machine(void)
{ {
mxc_arch_reset_init_dt(); mxc_arch_reset_init_dt();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
imx6sl_fec_init();
} }
static void __init imx6sl_init_irq(void) static void __init imx6sl_init_irq(void)