[U-Boot] [PATCH 2/2][v3] arch: arm: update the IFC IP input clock

[Prabhakar Kushwaha]

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.

So update IFC IP clock to be defined as per predefined clock
divisor of platform clock.

Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha at nxp.com>
---
 Changes for v2: Split the patch in 2 patch set
 Changes for v3: Rebased on top of u-boot commit

 arch/arm/cpu/armv7/ls102xa/clock.c                  |  9 +--------
 arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c | 10 ++--------
 arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_speed.c | 10 ++--------
 3 files changed, 5 insertions(+), 24 deletions(-)

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
 }
 
-- 
2.7.4