On 10/30/2012 01:05 AM, Laxman Dewangan wrote:This series modify the dts file to add the slink addresses,This series only instantiates the SPI controller, and not any SPI
make AUXDATA in board dt files, enable slink4 for tegra30-cardhu and
enable slink controller defconfig.
devices. I tried to solve this:
diff --git a/arch/arm/boot/dts/tegra30-cardhu.dtsi b/arch/arm/boot/dts/tegra30-cardhu.dtsiHowever, this didn't work. Has the driver been tested? I'm seeing the
index 700f0a3..3689853 100644
--- a/arch/arm/boot/dts/tegra30-cardhu.dtsi
+++ b/arch/arm/boot/dts/tegra30-cardhu.dtsi
@@ -278,6 +278,11 @@
spi@7000da00 {
status = "okay";
spi-max-frequency =<25000000>;
+ flash@0 {
+ reg =<0>;
+ compatible = "atmel,at25df321a";
+ spi-max-frequency =<25000000>;
+ };
};
ahub {
exact same problems I saw with the old driver, namely that the SPI flash
chip can't be identified; I think the ID bytes are read back as 0, and
hence drivers/mtd/devices/m25p80.c falls back to identifying the device
as mr25h256. Attempting to hexdump -C /dev/mtd0 gives me 32K of zeros,
whereas the device is 4M and full of non-zero data according to U-Boot.
Do you know what the problem is here? Can you please update the patch
series so that the SPI flash is instantiated and works correctly?