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| author | Satyanarayana, Sandhya <sandhya.satyanarayana@ti.com> | 2012-08-09 18:29:57 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 14:58:19 +0200 |
| commit | 6995a2893718a54cbd255ea3dd9b6d7306e30cf2 (patch) | |
| tree | cd4a9e07c0a76c4d6f719e07c2c7dffe3ae83f65 /arch/arm/include | |
| parent | 25f8bf6eff9e66df850301c5e9e5259807e286f0 (diff) | |
| download | blackbird-obmc-uboot-6995a2893718a54cbd255ea3dd9b6d7306e30cf2.tar.gz blackbird-obmc-uboot-6995a2893718a54cbd255ea3dd9b6d7306e30cf2.zip | |
am33xx evm: Update secure_emif_sdram_config during ddr init
This patch updates secure_emif_sdram_config with the
same value written to sdram_config during ddr3 initialization.
During suspend/resume, this value is copied into sdram_config.
With this, a write to sdram_config at the end of resume sequence
which triggers an init sequence can be avoided.
Without this register write in place, the DDR_RESET line goes
low for a few cycles during resume which is a violation of the
JEDEC spec.
Signed-off-by: Satyanarayana, Sandhya <sandhya.satyanarayana@ti.com>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/cpu.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/sys_proto.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-am33xx/cpu.h b/arch/arm/include/asm/arch-am33xx/cpu.h index de9ee91496..6cfbef76a7 100644 --- a/arch/arm/include/asm/arch-am33xx/cpu.h +++ b/arch/arm/include/asm/arch-am33xx/cpu.h @@ -234,6 +234,8 @@ struct vtp_reg { struct ctrl_stat { unsigned int resv1[16]; unsigned int statusreg; /* ofset 0x40 */ + unsigned int resv2[51]; + unsigned int secure_emif_sdram_config; /* offset 0x0110 */ }; /* AM33XX GPIO registers */ diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h index 8a4b24839f..819ea650f0 100644 --- a/arch/arm/include/asm/arch-am33xx/sys_proto.h +++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h @@ -46,6 +46,7 @@ u32 get_sysboot_value(void); int print_cpuinfo(void); #endif +extern struct ctrl_stat *cstat; u32 get_device_type(void); void setup_clocks_for_console(void); void ddr_pll_config(unsigned int ddrpll_M); |
