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 --- Changes for v2: Split the patch in 2 patch set Changes for v3: Rebased on top of u-boot commit Changes for v4: fix compilation error Changes for v5: Adding FSL_IFC as dependency Changes for v6: Updated subject description Changes for v7: Sending as it is Changes for v8: Sending as it is
README | 3 +++ arch/powerpc/cpu/mpc85xx/Kconfig | 16 ++++++++++++++++ arch/powerpc/cpu/mpc85xx/speed.c | 10 ++-------- 3 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/README b/README index a95348a..9fda381 100644 --- a/README +++ b/README @@ -504,6 +504,9 @@ The following options need to be configured: CONFIG_SYS_FSL_IFC_LE Defines the IFC controller register space as Little Endian
+ CONFIG_SYS_FSL_IFC_CLK_DIV + Defines divider of platform clock(clock input to IFC controller). + CONFIG_SYS_FSL_PBL_PBI It enables addition of RCW (Power on reset configuration) in built image. Please refer doc/README.pblimage for more details diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig index a3db014..83df733 100644 --- a/arch/powerpc/cpu/mpc85xx/Kconfig +++ b/arch/powerpc/cpu/mpc85xx/Kconfig @@ -1301,6 +1301,22 @@ config SYS_PPC_E500_DEBUG_TLB symbol should be set to the TLB1 entry to be used for this purpose. If unsure, do not change.
+config SYS_FSL_IFC_CLK_DIV + int "Divider of platform clock" + depends on FSL_IFC + default 2 if ARCH_B4420 || \ + ARCH_B4860 || \ + ARCH_T1024 || \ + ARCH_T1023 || \ + ARCH_T1040 || \ + ARCH_T1042 || \ + ARCH_T4160 || \ + ARCH_T4240 + default 1 + help + Defines divider of platform clock(clock input to + IFC controller). + source "board/freescale/b4860qds/Kconfig" source "board/freescale/bsc9131rdb/Kconfig" source "board/freescale/bsc9132qds/Kconfig" diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c index fcf5d92..adba092 100644 --- a/arch/powerpc/cpu/mpc85xx/speed.c +++ b/arch/powerpc/cpu/mpc85xx/speed.c @@ -27,10 +27,6 @@ DECLARE_GLOBAL_DATA_PTR; void get_sys_info(sys_info_t *sys_info) { 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, (void *)NULL}; - u32 ccr; -#endif #ifdef CONFIG_FSL_CORENET volatile ccsr_clk_t *clk = (void *)(CONFIG_SYS_FSL_CORENET_CLK_ADDR); unsigned int cpu; @@ -640,10 +636,8 @@ void get_sys_info(sys_info_t *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 }