diff options
| author | Mark Langsdorf <mark.langsdorf@calxeda.com> | 2012-11-21 13:01:06 -0600 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-12-06 13:51:53 -0700 |
| commit | 1e6d18353f24b7d31a7655e583abe875790587c2 (patch) | |
| tree | 75c9baa09676118e2201198fdc5577993f5f97c6 /board | |
| parent | 2af59c1c9412bafd441a8e472585541a3a36ae4e (diff) | |
| download | u-boot-linaro-stable-1e6d18353f24b7d31a7655e583abe875790587c2.tar.gz | |
highbank, opp: copy the opp point dtb table from sysram
The ECME puts a copy of the opp table in SysRam. Copy it from SysRam
and add it to the dtb.
Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/highbank/highbank.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/board/highbank/highbank.c b/board/highbank/highbank.c index 6776cb127..944ab9ce7 100644 --- a/board/highbank/highbank.c +++ b/board/highbank/highbank.c @@ -26,6 +26,8 @@ #define HB_SREG_A9_PWR_REQ 0xfff3cf00 #define HB_SREG_A9_BOOT_SRC_STAT 0xfff3cf04 #define HB_SREG_A9_PWRDOM_STAT 0xfff3cf20 +#define HB_SYSRAM_OPP_TABLE_BASE 0xfff8f000 +#define HB_OPP_VERSION 0 #define HB_PWR_SUSPEND 0 #define HB_PWR_SOFT_RESET 1 @@ -95,9 +97,16 @@ void dram_init_banksize(void) } #if defined(CONFIG_OF_BOARD_SETUP) +struct a9_opp { + unsigned int freq_hz; + unsigned int volt_mv; +}; + + void ft_board_setup(void *fdt, bd_t *bd) { const char disabled[] = "disabled"; + u32 *opp_table = HB_SYSRAM_OPP_TABLE_BASE; u32 reg = readl(HB_SREG_A9_PWRDOM_STAT); if (!(reg & PWRDOM_STAT_SATA)) @@ -105,6 +114,20 @@ void ft_board_setup(void *fdt, bd_t *bd) if (!(reg & PWRDOM_STAT_EMMC)) do_fixup_by_compat(fdt, "calxeda,hb-sdhci", "status", disabled, sizeof(disabled), 1); + + if ((opp_table[0] >> 16) == HB_OPP_VERSION) { + u32 dtb_table[2*10]; + u32 ret; + u32 i; + u32 num_opps = opp_table[0] & 0xff; + for (i = 0; i < num_opps; i++) { + dtb_table[2 * i] = cpu_to_be32(opp_table[3 + 3 * i]); + dtb_table[2 * i + 1] = + cpu_to_be32(opp_table[2 + 3 * i]); + } + fdt_find_and_setprop(fdt, "/cpus/cpu@0", "operating-points", + dtb_table, 8 * num_opps, 1); + } } #endif |