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authorYork Sun <yorksun@freescale.com>2012-10-08 07:44:31 +0000
committerAndy Fleming <afleming@freescale.com>2012-10-22 14:31:33 -0500
commit98ffa19053f2d10578a227de4e441698226fde0a (patch)
tree36010ca075f6ce2e62902c4b6321eff04f8cd5b4 /arch/powerpc
parentffd06e0231ac3fd0c5810f39f6e23527948df1c7 (diff)
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powerpc/mpc85xx: Add CONFIG_DDR_CLK_FREQ for corenet platform
New corenet platforms with chassis2 have separated DDR clock inputs. Use CONFIG_DDR_CLK_FREQ for DDR clock. This patch also cleans up the logic of detecting and displaying synchronous vs asynchronous mode. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/cpu/mpc85xx/cpu.c26
-rw-r--r--arch/powerpc/cpu/mpc85xx/speed.c4
2 files changed, 20 insertions, 10 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index f493483..892bfa4 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -60,26 +60,32 @@ int checkcpu (void)
uint major, minor;
struct cpu_type *cpu;
char buf1[32], buf2[32];
-#if defined(CONFIG_DDR_CLK_FREQ) || \
- (defined(CONFIG_FSL_CORENET) && !defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2))
+#if (defined(CONFIG_DDR_CLK_FREQ) || \
+ defined(CONFIG_FSL_CORENET)) && !defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2)
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif /* CONFIG_FSL_CORENET */
-#ifdef CONFIG_DDR_CLK_FREQ
- u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
- >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
-#else
+
+ /*
+ * Cornet platforms use ddr sync bit in RCW to indicate sync vs async
+ * mode. Previous platform use ddr ratio to do the same. This
+ * information is only for display here.
+ */
#ifdef CONFIG_FSL_CORENET
- u32 ddr_sync ;
#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
- ddr_sync = 0; /* only async mode is supported */
+ u32 ddr_sync = 0; /* only async mode is supported */
#else
- ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
+ u32 ddr_sync = ((gur->rcwsr[5]) & FSL_CORENET_RCWSR5_DDR_SYNC)
>> FSL_CORENET_RCWSR5_DDR_SYNC_SHIFT;
#endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
+#else /* CONFIG_FSL_CORENET */
+#ifdef CONFIG_DDR_CLK_FREQ
+ u32 ddr_ratio = ((gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO)
+ >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
#else
u32 ddr_ratio = 0;
-#endif /* CONFIG_FSL_CORENET */
#endif /* CONFIG_DDR_CLK_FREQ */
+#endif /* CONFIG_FSL_CORENET */
+
unsigned int i, core, nr_cores = cpu_numcores();
u32 mask = cpu_mask();
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index f07a28b..8a8f317 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -82,7 +82,11 @@ void get_sys_info (sys_info_t * sysInfo)
uint mem_pll_rat;
sysInfo->freqSystemBus = sysclk;
+#ifdef CONFIG_DDR_CLK_FREQ
+ sysInfo->freqDDRBus = CONFIG_DDR_CLK_FREQ;
+#else
sysInfo->freqDDRBus = sysclk;
+#endif
sysInfo->freqSystemBus *= (in_be32(&gur->rcwsr[0]) >> 25) & 0x1f;
mem_pll_rat = (in_be32(&gur->rcwsr[0]) >>