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.Liu@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); }