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author | Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> | 2017-02-02 09:32:00 (GMT) |
---|---|---|
committer | York Sun <york.sun@nxp.com> | 2017-02-03 22:31:45 (GMT) |
commit | add63f94a9c3bbe1af3fdf3f4c56a5185a4c0504 (patch) | |
tree | 42764dc1d5255e15910c9df403ed2969379cdb96 /arch | |
parent | 068789773d0b369a6a64120776932f912d183f61 (diff) | |
download | u-boot-add63f94a9c3bbe1af3fdf3f4c56a5185a4c0504.tar.xz |
arch: powerpc: update the eLBC IP input clock
eLBC IP clock is always a constant divisor of platform clock
pre-defined per SoC. Clock ratio register (LCRR) used in
current implementation governs eLBC IP output cloc.
Update sys_info->freq_localbus to represent eLBC 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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/cpu/mpc85xx/Kconfig | 18 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc85xx/speed.c | 28 | ||||
-rw-r--r-- | arch/powerpc/cpu/mpc86xx/speed.c | 15 |
3 files changed, 21 insertions, 40 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig index c06a4db..592b581 100644 --- a/arch/powerpc/cpu/mpc85xx/Kconfig +++ b/arch/powerpc/cpu/mpc85xx/Kconfig @@ -1337,6 +1337,24 @@ config SYS_FSL_IFC_CLK_DIV Defines divider of platform clock(clock input to IFC controller). +config SYS_FSL_LBC_CLK_DIV + int "Divider of platform clock" + depends on FSL_ELBC || ARCH_MPC8540 || \ + ARCH_MPC8548 || ARCH_MPC8541 || \ + ARCH_MPC8555 || ARCH_MPC8560 || \ + ARCH_MPC8568 + + default 2 if ARCH_P2041 || \ + ARCH_P3041 || \ + ARCH_P4080 || \ + ARCH_P5020 || \ + ARCH_P5040 + default 1 + + help + Defines divider of platform clock(clock input to + eLBC 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 adba092..cb8281e 100644 --- a/arch/powerpc/cpu/mpc85xx/speed.c +++ b/arch/powerpc/cpu/mpc85xx/speed.c @@ -607,32 +607,8 @@ void get_sys_info(sys_info_t *sys_info) #endif /* CONFIG_FSL_CORENET */ #if defined(CONFIG_FSL_LBC) - uint lcrr_div; -#if defined(CONFIG_SYS_LBC_LCRR) - /* We will program LCRR to this value later */ - lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV; -#else - lcrr_div = in_be32(&(LBC_BASE_ADDR)->lcrr) & LCRR_CLKDIV; -#endif - if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) { -#if defined(CONFIG_FSL_CORENET) - /* If this is corenet based SoC, bit-representation - * for four times the clock divider values. - */ - lcrr_div *= 4; -#elif !defined(CONFIG_ARCH_MPC8540) && !defined(CONFIG_ARCH_MPC8541) && \ - !defined(CONFIG_ARCH_MPC8555) && !defined(CONFIG_ARCH_MPC8560) - /* - * Yes, the entire PQ38 family use the same - * bit-representation for twice the clock divider values. - */ - lcrr_div *= 2; -#endif - sys_info->freq_localbus = sys_info->freq_systembus / lcrr_div; - } else { - /* In case anyone cares what the unknown value is */ - sys_info->freq_localbus = lcrr_div; - } + sys_info->freq_localbus = sys_info->freq_systembus / + CONFIG_SYS_FSL_LBC_CLK_DIV; #endif #if defined(CONFIG_FSL_IFC) diff --git a/arch/powerpc/cpu/mpc86xx/speed.c b/arch/powerpc/cpu/mpc86xx/speed.c index 05f23db..51b47b8 100644 --- a/arch/powerpc/cpu/mpc86xx/speed.c +++ b/arch/powerpc/cpu/mpc86xx/speed.c @@ -24,7 +24,6 @@ void get_sys_info(sys_info_t *sys_info) volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; volatile ccsr_gur_t *gur = &immap->im_gur; uint plat_ratio, e600_ratio; - uint lcrr_div; plat_ratio = (gur->porpllsr) & 0x0000003e; plat_ratio >>= 1; @@ -78,19 +77,7 @@ void get_sys_info(sys_info_t *sys_info) break; } -#if defined(CONFIG_SYS_LBC_LCRR) - /* We will program LCRR to this value later */ - lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV; -#else - lcrr_div = in_be32(&immap->im_lbc.lcrr) & LCRR_CLKDIV; -#endif - if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) { - sys_info->freq_localbus = sys_info->freq_systembus - / (lcrr_div * 2); - } else { - /* In case anyone cares what the unknown value is */ - sys_info->freq_localbus = lcrr_div; - } + sys_info->freq_localbus = sys_info->freq_systembus; } |