Patchwork [3/4] ARM: imx6q: Set enet tx reference clk from anatop to support 1588

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Submitter Frank Li
Date Oct. 31, 2012, 4:25 a.m.
Message ID <1351657522-25756-1-git-send-email-Frank.Li@freescale.com>
Download mbox | patch
Permalink /patch/195734/
State New
Headers show

Comments

Frank Li - Oct. 31, 2012, 4:25 a.m.
Set GRP1 BIT21 ENET_CLK_SEL:
  Enet tx reference clk from internal clock from anatop
  (loopback through pad), this clock also sent out to external PHY

Signed-off-by: Frank Li <Frank.Li@freescale.com>
---
 arch/arm/mach-imx/mach-imx6q.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

Patch

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 47c91f7..38d6910 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -117,6 +117,17 @@  static void __init imx6q_sabrelite_init(void)
 	imx6q_sabrelite_cko1_setup();
 }
 
+static void __init imx6q_1588_init(void)
+{
+	struct regmap *gpr;
+
+	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+	if (!IS_ERR(gpr))
+		regmap_update_bits(gpr, 0x4, 1 << 21, 1 << 21);
+	else
+		pr_err("failed to find fsl,imx6q-iomux-gpr regmap\n");
+
+}
 static void __init imx6q_usb_init(void)
 {
 	struct regmap *anatop;
@@ -153,6 +164,7 @@  static void __init imx6q_init_machine(void)
 
 	imx6q_pm_init();
 	imx6q_usb_init();
+	imx6q_1588_init();
 }
 
 static struct cpuidle_driver imx6q_cpuidle_driver = {