diff options
| author | York Sun <yorksun@freescale.com> | 2013-03-25 07:40:07 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2013-05-24 16:54:11 -0500 |
| commit | f69814397e7efaf0b2bfa3c83425c906ce6b50f4 (patch) | |
| tree | 3526ce4f78bb8d70ad0e0b80df23002a5ee5fb07 /arch/powerpc/cpu/mpc85xx/speed.c | |
| parent | 5f208d118a8590843aaca723d304b35f2729c141 (diff) | |
powerpc/chassis2: Change core numbering scheme
To align with chassis generation 2 spec, all cores are numbered in sequence.
The cores may reside across multiple clusters. Each cluster has zero to four
cores. The first available core is numbered as core 0. The second available
core is numbered as core 1 and so on.
Core clocks are generated by each clusters. To identify the cluster of each
core, topology registers are examined.
Cluster clock registers are reorganized to be easily indexed.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/speed.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/speed.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c index f00b1abe63..a4d6e9cc73 100644 --- a/arch/powerpc/cpu/mpc85xx/speed.c +++ b/arch/powerpc/cpu/mpc85xx/speed.c @@ -112,23 +112,20 @@ void get_sys_info (sys_info_t * sysInfo) #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2 /* * Each cluster has up to 4 cores, sharing the same PLL selection. - * The cluster assignment is fixed per SoC. There is no way identify the - * assignment so far, presuming the "first configuration" which is to - * fill the lower cluster group first before moving up to next group. - * PLL1, PLL2, PLL3 are cluster group A, feeding core 0~3 on cluster 1 - * and core 4~7 on cluster 2 - * PLL4, PLL5, PLL6 are cluster group B, feeding core 8~11 on cluster 3 - * and core 12~15 on cluster 4 if existing + * The cluster assignment is fixed per SoC. PLL1, PLL2, PLL3 are + * cluster group A, feeding cores on cluster 1 and cluster 2. + * PLL4, PLL5, PLL6 are cluster group B, feeding cores on cluster 3 + * and cluster 4 if existing. */ for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) { - u32 c_pll_sel = (in_be32(&clk->clkc0csr + (cpu / 4) * 8) >> 27) + int cluster = fsl_qoriq_core_to_cluster(cpu); + u32 c_pll_sel = (in_be32(&clk->clkcsr[cluster].clkcncsr) >> 27) & 0xf; u32 cplx_pll = core_cplx_PLL[c_pll_sel]; if (cplx_pll > 3) printf("Unsupported architecture configuration" " in function %s\n", __func__); - cplx_pll += (cpu / 8) * 3; - + cplx_pll += (cluster / 2) * 3; sysInfo->freqProcessor[cpu] = freqCC_PLL[cplx_pll] / core_cplx_PLL_div[c_pll_sel]; } @@ -240,7 +237,8 @@ void get_sys_info (sys_info_t * sysInfo) #else /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */ for_each_cpu(i, cpu, cpu_numcores(), cpu_mask()) { - u32 c_pll_sel = (in_be32(&clk->clkc0csr + cpu*8) >> 27) & 0xf; + u32 c_pll_sel = (in_be32(&clk->clkcsr[cpu].clkcncsr) >> 27) + & 0xf; u32 cplx_pll = core_cplx_PLL[c_pll_sel]; sysInfo->freqProcessor[cpu] = |