diff options
Diffstat (limited to 'cpu/mpc86xx')
| -rw-r--r-- | cpu/mpc86xx/cpu.c | 21 | ||||
| -rw-r--r-- | cpu/mpc86xx/fdt.c | 9 | ||||
| -rw-r--r-- | cpu/mpc86xx/speed.c | 19 |
3 files changed, 32 insertions, 17 deletions
diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c index 4cace98..3568023 100644 --- a/cpu/mpc86xx/cpu.c +++ b/cpu/mpc86xx/cpu.c @@ -39,8 +39,6 @@ checkcpu(void) uint pvr, svr; uint ver; uint major, minor; - uint lcrr; /* local bus clock ratio register */ - uint clkdiv; /* clock divider portion of lcrr */ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; volatile ccsr_gur_t *gur = &immap->im_gur; @@ -100,22 +98,11 @@ checkcpu(void) printf("MPX:%4lu MHz, ", sysinfo.freqSystemBus / 1000000); printf("DDR:%4lu MHz, ", sysinfo.freqSystemBus / 2000000); -#if defined(CONFIG_SYS_LBC_LCRR) - lcrr = CONFIG_SYS_LBC_LCRR; -#else - { - volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; - volatile ccsr_lbc_t *lbc = &immap->im_lbc; - - lcrr = lbc->lcrr; - } -#endif - clkdiv = lcrr & 0x0f; - if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) { - printf("LBC:%4lu MHz\n", - sysinfo.freqSystemBus / 1000000 / clkdiv); + if (sysinfo.freqLocalBus > LCRR_CLKDIV) { + printf("LBC:%4lu MHz\n", sysinfo.freqLocalBus / 1000000); } else { - printf(" LBC: unknown (lcrr: 0x%08x)\n", lcrr); + printf("LBC: unknown (LCRR[CLKDIV] = 0x%02x)\n", + sysinfo.freqLocalBus); } puts(" L2: "); diff --git a/cpu/mpc86xx/fdt.c b/cpu/mpc86xx/fdt.c index 3adfad9..e277040 100644 --- a/cpu/mpc86xx/fdt.c +++ b/cpu/mpc86xx/fdt.c @@ -13,6 +13,8 @@ DECLARE_GLOBAL_DATA_PTR; +DECLARE_GLOBAL_DATA_PTR; + void ft_cpu_setup(void *blob, bd_t *bd) { #if (CONFIG_NUM_CPUS > 1) @@ -29,6 +31,13 @@ void ft_cpu_setup(void *blob, bd_t *bd) do_fixup_by_prop_u32(blob, "device_type", "soc", 4, "bus-frequency", bd->bi_busfreq, 1); +#if defined(CONFIG_MPC8641) + do_fixup_by_compat_u32(blob, "fsl,mpc8641-localbus", + "bus-frequency", gd->lbc_clk, 1); +#endif + do_fixup_by_compat_u32(blob, "fsl,elbc", + "bus-frequency", gd->lbc_clk, 1); + fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize); #if defined(CONFIG_HAS_ETH0) || defined(CONFIG_HAS_ETH1) \ diff --git a/cpu/mpc86xx/speed.c b/cpu/mpc86xx/speed.c index 415ac9d..64a3479 100644 --- a/cpu/mpc86xx/speed.c +++ b/cpu/mpc86xx/speed.c @@ -28,6 +28,7 @@ #include <common.h> #include <mpc86xx.h> #include <asm/processor.h> +#include <asm/io.h> DECLARE_GLOBAL_DATA_PTR; @@ -39,6 +40,7 @@ void get_sys_info(sys_info_t *sysInfo) 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; @@ -90,6 +92,22 @@ void get_sys_info(sys_info_t *sysInfo) sysInfo->freqProcessor = e600_ratio + sysInfo->freqSystemBus; break; } + +#if defined(CONFIG_SYS_LBC_LCRR) + /* We will program LCRR to this value later */ + lcrr_div = CONFIG_SYS_LBC_LCRR & LCRR_CLKDIV; +#else + { + volatile ccsr_lbc_t *lbc = &immap->im_lbc; + lcrr_div = in_be32(&lbc->lcrr) & LCRR_CLKDIV; + } +#endif + if (lcrr_div == 2 || lcrr_div == 4 || lcrr_div == 8) { + sysInfo->freqLocalBus = sysInfo->freqSystemBus / (lcrr_div * 2); + } else { + /* In case anyone cares what the unknown value is */ + sysInfo->freqLocalBus = lcrr_div; + } } @@ -105,6 +123,7 @@ int get_clocks(void) get_sys_info(&sys_info); gd->cpu_clk = sys_info.freqProcessor; gd->bus_clk = sys_info.freqSystemBus; + gd->lbc_clk = sys_info.freqLocalBus; /* * The base clock for I2C depends on the actual SOC. Unfortunately, |