diff options
Diffstat (limited to 'cpu/mpc85xx')
| -rw-r--r-- | cpu/mpc85xx/cpu.c | 13 | ||||
| -rw-r--r-- | cpu/mpc85xx/fdt.c | 2 | ||||
| -rw-r--r-- | cpu/mpc85xx/speed.c | 31 |
3 files changed, 37 insertions, 9 deletions
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c index dcd8817..74b210c 100644 --- a/cpu/mpc85xx/cpu.c +++ b/cpu/mpc85xx/cpu.c @@ -116,22 +116,21 @@ int checkcpu (void) get_sys_info(&sysinfo); puts("Clock Configuration:\n"); - printf(" CPU:%4lu MHz, ", sysinfo.freqProcessor / 1000000); - printf("CCB:%4lu MHz,\n", sysinfo.freqSystemBus / 1000000); - + printf(" CPU:%4lu MHz, ", DIV_ROUND_UP(sysinfo.freqProcessor,1000000)); + printf("CCB:%4lu MHz,\n", DIV_ROUND_UP(sysinfo.freqSystemBus,1000000)); ddr_ratio = ((gur->porpllsr) & 0x00003e00) >> 9; switch (ddr_ratio) { case 0x0: printf(" DDR:%4lu MHz (%lu MT/s data rate), ", - sysinfo.freqDDRBus / 2000000, sysinfo.freqDDRBus / 1000000); + DIV_ROUND_UP(sysinfo.freqDDRBus,2000000), DIV_ROUND_UP(sysinfo.freqDDRBus,1000000)); break; case 0x7: printf(" DDR:%4lu MHz (%lu MT/s data rate) (Synchronous), ", - sysinfo.freqDDRBus / 2000000, sysinfo.freqDDRBus / 1000000); + DIV_ROUND_UP(sysinfo.freqDDRBus, 2000000), DIV_ROUND_UP(sysinfo.freqDDRBus, 1000000)); break; default: printf(" DDR:%4lu MHz (%lu MT/s data rate) (Asynchronous), ", - sysinfo.freqDDRBus / 2000000, sysinfo.freqDDRBus / 1000000); + DIV_ROUND_UP(sysinfo.freqDDRBus, 2000000), DIV_ROUND_UP(sysinfo.freqDDRBus,1000000)); break; } @@ -154,7 +153,7 @@ int checkcpu (void) clkdiv *= 2; #endif printf("LBC:%4lu MHz\n", - sysinfo.freqSystemBus / 1000000 / clkdiv); + DIV_ROUND_UP(sysinfo.freqSystemBus, 1000000) / clkdiv); } else { printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr); } diff --git a/cpu/mpc85xx/fdt.c b/cpu/mpc85xx/fdt.c index bde6d1e..bb87740 100644 --- a/cpu/mpc85xx/fdt.c +++ b/cpu/mpc85xx/fdt.c @@ -52,7 +52,7 @@ void ft_fixup_cpu(void *blob, u64 memory_limit) if (*reg == id) { fdt_setprop_string(blob, off, "status", "okay"); } else { - u32 val = *reg * SIZE_BOOT_ENTRY + spin_tbl_addr; + u64 val = *reg * SIZE_BOOT_ENTRY + spin_tbl_addr; val = cpu_to_fdt32(val); fdt_setprop_string(blob, off, "status", "disabled"); diff --git a/cpu/mpc85xx/speed.c b/cpu/mpc85xx/speed.c index d90d397..699441b4 100644 --- a/cpu/mpc85xx/speed.c +++ b/cpu/mpc85xx/speed.c @@ -65,6 +65,9 @@ void get_sys_info (sys_info_t * sysInfo) int get_clocks (void) { sys_info_t sys_info; +#ifdef CONFIG_MPC8544 + volatile ccsr_gur_t *gur = (void *) CFG_MPC85xx_GUTS_ADDR; +#endif #if defined(CONFIG_CPM2) volatile ccsr_cpm_t *cpm = (ccsr_cpm_t *)CFG_MPC85xx_CPM_ADDR; uint sccr, dfbrg; @@ -78,8 +81,34 @@ int get_clocks (void) gd->cpu_clk = sys_info.freqProcessor; gd->bus_clk = sys_info.freqSystemBus; gd->mem_clk = sys_info.freqDDRBus; + + /* + * The base clock for I2C depends on the actual SOC. Unfortunately, + * there is no pattern that can be used to determine the frequency, so + * the only choice is to look up the actual SOC number and use the value + * for that SOC. This information is taken from application note + * AN2919. + */ +#if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \ + defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555) gd->i2c1_clk = sys_info.freqSystemBus; - gd->i2c2_clk = sys_info.freqSystemBus; +#elif defined(CONFIG_MPC8544) + /* + * On the 8544, the I2C clock is the same as the SEC clock. This can be + * either CCB/2 or CCB/3, depending on the value of cfg_sec_freq. See + * 4.4.3.3 of the 8544 RM. Note that this might actually work for all + * 85xx, but only the 8544 has cfg_sec_freq, so it's unknown if the + * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544. + */ + if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG) + gd->i2c1_clk = sys_info.freqSystemBus / 3; + else + gd->i2c1_clk = sys_info.freqSystemBus / 2; +#else + /* Most 85xx SOCs use CCB/2, so this is the default behavior. */ + gd->i2c1_clk = sys_info.freqSystemBus / 2; +#endif + gd->i2c2_clk = gd->i2c1_clk; #if defined(CONFIG_CPM2) gd->vco_out = 2*sys_info.freqSystemBus; |