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| author | Wu, Josh <Josh.wu@atmel.com> | 2012-09-05 22:14:28 +0000 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2012-09-13 14:27:28 +0200 |
| commit | 1c5794a13e9baeafbace8cc1f1890b9e0a3b575c (patch) | |
| tree | 4e203357effd96fa918ef1cdb8c3470e7f4b2377 /board/atmel | |
| parent | 057df193b40d31799d41d43bc832a972f658bfe4 (diff) | |
| download | u-boot-imx-1c5794a13e9baeafbace8cc1f1890b9e0a3b575c.zip u-boot-imx-1c5794a13e9baeafbace8cc1f1890b9e0a3b575c.tar.gz u-boot-imx-1c5794a13e9baeafbace8cc1f1890b9e0a3b575c.tar.bz2 | |
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 <josh.wu@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Diffstat (limited to 'board/atmel')
| -rw-r--r-- | board/atmel/at91sam9x5ek/at91sam9x5ek.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/board/atmel/at91sam9x5ek/at91sam9x5ek.c b/board/atmel/at91sam9x5ek/at91sam9x5ek.c index ae408bc..06028aa 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 */ |