On T2080 the 3rd DMA is not functional if SRIO2 is chosen in SerDes2.
we add fdt_fixup_dma3() to disable the 3rd DMA if SRIO2 is chosen.
Signed-off-by: Shengzhou Liu <shengzhou....@freescale.com>
---
board/freescale/t208xqds/t208xqds.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/board/freescale/t208xqds/t208xqds.c
b/board/freescale/t208xqds/t208xqds.c
index 9cfc0bd..548d46a 100644
--- a/board/freescale/t208xqds/t208xqds.c
+++ b/board/freescale/t208xqds/t208xqds.c
@@ -433,6 +433,32 @@ int misc_init_r(void)
return 0;
}
+void fdt_fixup_dma3(void *blob)
+{
+ /* the 3rd DMA is not functional if SRIO2 is chosen in SerDes2 */
+ int nodeoff;
+ ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ u32 srds_prtcl_s2 = in_be32(&gur->rcwsr[4]) &
+ FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
+ srds_prtcl_s2 >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
+#define CONFIG_SYS_ELO3_DMA2 (0xffe000000 + 0x102300)
+
+ switch (srds_prtcl_s2) {
+ case 0x29:
+ case 0x2d:
+ case 0x2e:
+ nodeoff = fdt_node_offset_by_compat_reg(blob, "fsl,elo3-dma",
+ CONFIG_SYS_ELO3_DMA2);
+ if (nodeoff > 0)
+ fdt_status_disabled(blob, nodeoff);
+ else
+ printf("\nWARNING unable to set status for dma3\n");
+ break;
+ default:
+ return;
+ }
+}
+
void ft_board_setup(void *blob, bd_t *bd)
{
phys_addr_t base;
@@ -456,4 +482,5 @@ void ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_fman_ethernet(blob);
fdt_fixup_board_enet(blob);
#endif
+ fdt_fixup_dma3(blob);
}
--
1.8.0
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