From: Fugang Duan <b38611@freescale.com>
Date: Wed, 14 Jan 2015 08:18:58 +0000 (+0800)
Subject: MLK-10098 ARM: imx: fix 1588 clock init
X-Git-Tag: C0P2-H0.0--20200415~4766
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=f279be4fcc9e1dae4e133bdd59e662fe7f40ad84;p=linux.git

MLK-10098 ARM: imx: fix 1588 clock init

The enet clock define is changed as there has no "enet_ref" clock name.
If the tx_clk is sourced from SOC anatop PLL, user define the clock id
in devicetree. So we only to judge the ptp clock valid and then set the
related GPR bit.

Signed-off-by: Fugang Duan <B38611@freescale.com>
(cherry picked from commit: 01ed2a839d9b76ccb4113dc2a04af4a33b33de22)
---

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 68e293490ec5..cbdee5106bf4 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2013 Freescale Semiconductor, Inc.
+ * Copyright 2011-2015 Freescale Semiconductor, Inc.
  * Copyright 2011 Linaro Ltd.
  *
  * The code contained herein is licensed under the GNU General Public
@@ -193,9 +193,7 @@ static void __init imx6q_1588_init(void)
 {
 	struct device_node *np;
 	struct clk *ptp_clk;
-	struct clk *enet_ref;
 	struct regmap *gpr;
-	u32 clksel;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-fec");
 	if (!np) {
@@ -209,30 +207,19 @@ static void __init imx6q_1588_init(void)
 		goto put_node;
 	}
 
-	enet_ref = clk_get_sys(NULL, "enet_ref");
-	if (IS_ERR(enet_ref)) {
-		pr_warn("%s: failed to get enet clock\n", __func__);
-		goto put_ptp_clk;
-	}
-
 	/*
 	 * If enet_ref from ANATOP/CCM is the PTP clock source, we need to
 	 * set bit IOMUXC_GPR1[21].  Or the PTP clock must be from pad
 	 * (external OSC), and we need to clear the bit.
 	 */
-	clksel = clk_is_match(ptp_clk, enet_ref) ?
-				IMX6Q_GPR1_ENET_CLK_SEL_ANATOP :
-				IMX6Q_GPR1_ENET_CLK_SEL_PAD;
 	gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
 	if (!IS_ERR(gpr))
 		regmap_update_bits(gpr, IOMUXC_GPR1,
 				IMX6Q_GPR1_ENET_CLK_SEL_MASK,
-				clksel);
+				IMX6Q_GPR1_ENET_CLK_SEL_ANATOP);
 	else
 		pr_err("failed to find fsl,imx6q-iomuxc-gpr regmap\n");
 
-	clk_put(enet_ref);
-put_ptp_clk:
 	clk_put(ptp_clk);
 put_node:
 	of_node_put(np);