diff options
author | Matt Sealey <matt@genesi-usa.com> | 2012-08-22 09:25:39 (GMT) |
---|---|---|
committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 12:58:29 (GMT) |
commit | ff9ab7c2e48657fb35a465fe5c681ad3efaf8289 (patch) | |
tree | e9942ff4e27dc8ef515f05bdf555653a34ffbddc /board/genesi/mx51_efikamx/efikamx.c | |
parent | 4ee80c63767ec2f21a7262b15907a88e785653af (diff) | |
download | u-boot-ff9ab7c2e48657fb35a465fe5c681ad3efaf8289.tar.xz |
efikamx: remove drive strength function and roll its functionality into the DCD
Efika MX boards configure their DDR pad settings twice, one in the DCD generated
from imximage_*.cfg and again in init_drive_strength called before relocation.
Rather than doing this, roll the changes it makes into the DCD so DDR is set up
before a single line of code in U-Boot is run.
The settings are identical with this DCD block which is shorter (by 7 entries)
than the old one, and after the output of init_drive_strength since a lot of the
functionality in the existing DCD and init_drive_strength function was just
setting the POR defaults. This goes to explain some now-missing entries.
Several hundred rounds of mtest have been run to test the settings before and
after to confirm DDR is stable and no ill-effects have been found.
Signed-off-by: Matt Sealey <matt@genesi-usa.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'board/genesi/mx51_efikamx/efikamx.c')
-rw-r--r-- | board/genesi/mx51_efikamx/efikamx.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/board/genesi/mx51_efikamx/efikamx.c b/board/genesi/mx51_efikamx/efikamx.c index e88b2ed..12371c9 100644 --- a/board/genesi/mx51_efikamx/efikamx.c +++ b/board/genesi/mx51_efikamx/efikamx.c @@ -597,85 +597,8 @@ void efikamx_toggle_led(uint32_t mask) /* * Board initialization */ -static void init_drive_strength(void) -{ - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEDDR, PAD_CTL_DDR_INPUT_CMOS); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEADDR, PAD_CTL_PKE_ENABLE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRAPKS, PAD_CTL_PUE_KEEPER); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRAPUS, PAD_CTL_100K_PU); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_A1, PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_A0, PAD_CTL_DRV_HIGH); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_A1, PAD_CTL_DRV_HIGH); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_RAS, - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CAS, - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_PKEDDR, PAD_CTL_PKE_ENABLE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRPKS, PAD_CTL_PUE_KEEPER); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR0, PAD_CTL_HYS_NONE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR1, PAD_CTL_HYS_NONE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR2, PAD_CTL_HYS_NONE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_HYSDDR3, PAD_CTL_HYS_NONE); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B0, PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B1, PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B2, PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDR_SR_B4, PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DDRPUS, PAD_CTL_100K_PU); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_INMODE1, PAD_CTL_DDR_INPUT_CMOS); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B0, PAD_CTL_DRV_MEDIUM); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B1, PAD_CTL_DRV_MEDIUM); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B2, PAD_CTL_DRV_MEDIUM); - mxc_iomux_set_pad(MX51_PIN_CTL_GRP_DRAM_B4, PAD_CTL_DRV_MEDIUM); - - /* Setting pad options */ - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDWE, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCKE0, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCKE1, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDCLK, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS0, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS1, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS2, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_SDQS3, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CS0, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_CS1, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM0, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM1, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM2, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); - mxc_iomux_set_pad(MX51_PIN_CTL_DRAM_DQM3, - PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | - PAD_CTL_DRV_HIGH | PAD_CTL_SRE_FAST); -} - int board_early_init_f(void) { - init_drive_strength(); - setup_iomux_uart(); setup_iomux_spi(); setup_iomux_led(); |