From 8e63ed518dd6f03119b58af40b5f1e5bae688121 Mon Sep 17 00:00:00 2001
From: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Date: Thu, 2 Feb 2017 15:01:37 +0530
Subject: arch: arm: update the IFC IP input clock

IFC IP clock is always a constant divisor of platform clock
pre-defined per SoC. Clock control register (CCR) used in
current implementation governs IFC IP output clock.

Update sys_info->freq_localbus to represent IFC input clock with
value constant divisor of platform clock.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

diff --git a/arch/arm/cpu/armv7/ls102xa/clock.c b/arch/arm/cpu/armv7/ls102xa/clock.c
index 7a337e1..b7d61ad 100644
--- a/arch/arm/cpu/armv7/ls102xa/clock.c
+++ b/arch/arm/cpu/armv7/ls102xa/clock.c
@@ -19,10 +19,6 @@ DECLARE_GLOBAL_DATA_PTR;
 void get_sys_info(struct sys_info *sys_info)
 {
 	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
-#ifdef CONFIG_FSL_IFC
-	struct fsl_ifc ifc_regs = {(void *)CONFIG_SYS_IFC_ADDR, (void *)NULL};
-	u32 ccr;
-#endif
 	struct ccsr_clk *clk = (void *)(CONFIG_SYS_FSL_LS1_CLK_ADDR);
 	unsigned int cpu;
 	const u8 core_cplx_pll[6] = {
@@ -74,10 +70,7 @@ void get_sys_info(struct sys_info *sys_info)
 	}
 
 #if defined(CONFIG_FSL_IFC)
-	ccr = in_be32(&ifc_regs.gregs->ifc_ccr);
-	ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
-
-	sys_info->freq_localbus = sys_info->freq_systembus / ccr;
+	sys_info->freq_localbus = sys_info->freq_systembus;
 #endif
 }
 
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
index 3da7037..2d7775e 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
@@ -22,10 +22,6 @@ DECLARE_GLOBAL_DATA_PTR;
 void get_sys_info(struct sys_info *sys_info)
 {
 	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
-#ifdef CONFIG_FSL_IFC
-	struct fsl_ifc ifc_regs = {(void *)CONFIG_SYS_IFC_ADDR, (void *)NULL};
-	u32 ccr;
-#endif
 #if (defined(CONFIG_FSL_ESDHC) &&\
 	defined(CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK)) ||\
 	defined(CONFIG_SYS_DPAA_FMAN)
@@ -156,10 +152,8 @@ void get_sys_info(struct sys_info *sys_info)
 #endif
 
 #if defined(CONFIG_FSL_IFC)
-	ccr = ifc_in32(&ifc_regs.gregs->ifc_ccr);
-	ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
-
-	sys_info->freq_localbus = sys_info->freq_systembus / ccr;
+	sys_info->freq_localbus = sys_info->freq_systembus /
+						CONFIG_SYS_FSL_IFC_CLK_DIV;
 #endif
 }
 
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_speed.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_speed.c
index f8fefc7..ab46431 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_speed.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_speed.c
@@ -26,10 +26,6 @@ DECLARE_GLOBAL_DATA_PTR;
 void get_sys_info(struct sys_info *sys_info)
 {
 	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
-#ifdef CONFIG_FSL_IFC
-	struct fsl_ifc ifc_regs = {(void *)CONFIG_SYS_IFC_ADDR, (void *)NULL};
-	u32 ccr;
-#endif
 	struct ccsr_clk_cluster_group __iomem *clk_grp[2] = {
 		(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPA_ADDR),
 		(void *)(CONFIG_SYS_FSL_CH3_CLK_GRPB_ADDR)
@@ -128,10 +124,8 @@ void get_sys_info(struct sys_info *sys_info)
 	}
 
 #if defined(CONFIG_FSL_IFC)
-	ccr = ifc_in32(&ifc_regs.gregs->ifc_ccr);
-	ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
-
-	sys_info->freq_localbus = sys_info->freq_systembus / ccr;
+	sys_info->freq_localbus = sys_info->freq_systembus /
+						CONFIG_SYS_FSL_IFC_CLK_DIV;
 #endif
 }
 
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