From: Wu, Josh Date: Wed, 5 Sep 2012 22:14:28 +0000 (+0000) Subject: at91sam9x5: set default EBI I/O drive configuration. X-Git-Tag: v2012.10-rc3~10^2~69^2~4 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=1c5794a13e9baeafbace8cc1f1890b9e0a3b575c;p=oweals%2Fu-boot.git at91sam9x5: set default EBI I/O drive configuration. This patch configure at91sam9x5's EBI drive I/O. Without this, When SD card boot, the nand flash read/write are not stable. Which will cause kernel MTD test fail (Since mainline kernel doesn't configure the EBI register). Signed-off-by: Josh Wu Signed-off-by: Andreas Bießmann --- diff --git a/board/atmel/at91sam9x5ek/at91sam9x5ek.c b/board/atmel/at91sam9x5ek/at91sam9x5ek.c index ae408bc9db..06028aa01e 100644 --- a/board/atmel/at91sam9x5ek/at91sam9x5ek.c +++ b/board/atmel/at91sam9x5ek/at91sam9x5ek.c @@ -62,6 +62,10 @@ static void at91sam9x5ek_nand_hw_init(void) csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA; /* NAND flash on D16 */ csa |= AT91_MATRIX_NFD0_ON_D16; + + /* Configure IO drive */ + csa &= ~AT91_MATRIX_EBI_EBI_IOSR_NORMAL; + writel(csa, &matrix->ebicsa); /* Configure SMC CS3 for NAND/SmartMedia */