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>

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();