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authorMatthias Fuchs <matthias.fuchs@esd.eu>2012-01-18 01:33:09 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-27 21:19:22 +0100
commited97abed27455b4f9e0dec6274976f5010258ed9 (patch)
tree589d5888f0048912246a21e8e6782e87c34782c4 /board/freescale/mx28evk
parent598aa2bbfb5aeab43fbfb5ca63218daa9c425871 (diff)
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mx28evk: add SPI support
This patch adds SPI support for the MX28EVK. Support for an optionally installed SPI flash is also added. An example configuration for redundant envrionment from SPI flash is also added but disabled by default. This patch has been tested on a MX28EVK Rev. D with an installed SST25VF032B 32Mbit SPI flash. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'board/freescale/mx28evk')
-rw-r--r--board/freescale/mx28evk/iomux.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/board/freescale/mx28evk/iomux.c b/board/freescale/mx28evk/iomux.c
index 904e3f3..396761b 100644
--- a/board/freescale/mx28evk/iomux.c
+++ b/board/freescale/mx28evk/iomux.c
@@ -28,6 +28,7 @@
#define MUX_CONFIG_SSP0 (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
#define MUX_CONFIG_ENET (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP)
#define MUX_CONFIG_EMI (MXS_PAD_3V3 | MXS_PAD_12MA | MXS_PAD_NOPULL)
+#define MUX_CONFIG_SSP2 (MXS_PAD_3V3 | MXS_PAD_4MA | MXS_PAD_PULLUP)
const iomux_cfg_t iomux_setup[] = {
/* DUART */
@@ -130,6 +131,13 @@ const iomux_cfg_t iomux_setup[] = {
MX28_PAD_EMI_CE0N__EMI_CE0N | MUX_CONFIG_EMI,
MX28_PAD_EMI_CE1N__EMI_CE1N | MUX_CONFIG_EMI,
MX28_PAD_EMI_CKE__EMI_CKE | MUX_CONFIG_EMI,
+
+ /* SPI2 (for SPI flash) */
+ MX28_PAD_SSP2_SCK__SSP2_SCK | MUX_CONFIG_SSP2,
+ MX28_PAD_SSP2_MOSI__SSP2_CMD | MUX_CONFIG_SSP2,
+ MX28_PAD_SSP2_MISO__SSP2_D0 | MUX_CONFIG_SSP2,
+ MX28_PAD_SSP2_SS0__SSP2_D3 |
+ (MXS_PAD_3V3 | MXS_PAD_8MA | MXS_PAD_PULLUP),
};
void board_init_ll(void)