Do not init SATA when disabled on 8536DS.
SGMII and SATA share the serdes on MPC8536 CPU, When SATA disabled and the
driver still try to access the SATA registers, the cpu will hangup.
This patch try to fix this by reading the serdes status before the SATA
initialize.
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/mpc8536ds/mpc8536ds.c b/board/freescale/mpc8536ds/mpc8536ds.c
index 8216c70..3cf12fd 100644
--- a/board/freescale/mpc8536ds/mpc8536ds.c
+++ b/board/freescale/mpc8536ds/mpc8536ds.c
@@ -608,6 +608,18 @@
}
#endif
+int is_sata_supported()
+{
+ volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
+ uint devdisr = gur->devdisr;
+ uint sdrs2_io_sel =
+ (gur->pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >> 27;
+ if (sdrs2_io_sel & 0x04)
+ return 0;
+
+ return 1;
+}
+
#if defined(CONFIG_OF_BOARD_SETUP)
void
ft_board_setup(void *blob, bd_t *bd)