From 800c73c410732e1c9f852a935151c834f3b31c4d Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@kernel.crashing.org>
Date: Mon, 8 Oct 2012 07:44:06 +0000
Subject: [PATCH] powerpc/85xx: Add determining and report IFC frequency
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---
arch/powerpc/cpu/mpc85xx/cpu.c | 4 ++++
arch/powerpc/cpu/mpc85xx/speed.c | 11 +++++++++++
2 files changed, 15 insertions(+)
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index a5048a1306..26fc84c9aa 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -181,6 +181,10 @@ int checkcpu (void)
}
#endif
+#if defined(CONFIG_FSL_IFC)
+ printf("IFC:%-4s MHz\n", strmhz(buf1, sysinfo.freqLocalBus));
+#endif
+
#ifdef CONFIG_CPM2
printf("CPM: %s MHz\n", strmhz(buf1, sysinfo.freqSystemBus));
#endif
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 6dd9e8db70..203f53d600 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -39,6 +39,10 @@ DECLARE_GLOBAL_DATA_PTR;
void get_sys_info (sys_info_t * sysInfo)
{
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+#ifdef CONFIG_FSL_IFC
+ struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
+ u32 ccr;
+#endif
#ifdef CONFIG_FSL_CORENET
volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR);
unsigned int cpu;
@@ -230,6 +234,13 @@ void get_sys_info (sys_info_t * sysInfo)
sysInfo->freqLocalBus = lcrr_div;
}
#endif
+
+#if defined(CONFIG_FSL_IFC)
+ ccr = in_be32(&ifc_regs->ifc_ccr);
+ ccr = ((ccr & IFC_CCR_CLK_DIV_MASK) >> IFC_CCR_CLK_DIV_SHIFT) + 1;
+
+ sysInfo->freqLocalBus = sysInfo->freqSystemBus / ccr;
+#endif
}
--
2.39.5