diff options
| author | Shengzhou Liu <Shengzhou.Liu@freescale.com> | 2014-05-19 15:08:14 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-07-22 16:25:53 -0700 |
| commit | 605714f66998e02cbe3666139a48d83e85fcdc0f (patch) | |
| tree | 94a5cb40d6458e74a97ba46fb104886a049fe3a5 /arch/powerpc/cpu/mpc85xx/fdt.c | |
| parent | fbe79a17fddb7f0b11aa15b9c93e9a4a26165ed8 (diff) | |
powerpc/85xx: add fdt_fixup_dma3
On some SoC(e.g. T2080/T4240) the 3rd DMA is not functional if SRIO2 is
chosen. we add fdt_fixup_dma3() to disable the 3rd DMA if SRIO2 is chosen.
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/fdt.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fdt.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c index 85dfa5bc01..3665ec6b6c 100644 --- a/arch/powerpc/cpu/mpc85xx/fdt.c +++ b/arch/powerpc/cpu/mpc85xx/fdt.c @@ -612,6 +612,51 @@ static void fdt_fixup_usb(void *fdt) #define fdt_fixup_usb(x) #endif +#if defined(CONFIG_PPC_T2080) || defined(CONFIG_PPC_T4240) || \ + defined(CONFIG_PPC_T4160) || defined(CONFIG_PPC_T4080) +void fdt_fixup_dma3(void *blob) +{ + /* the 3rd DMA is not functional if SRIO2 is chosen */ + int nodeoff; + ccsr_gur_t __iomem *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); + +#define CONFIG_SYS_ELO3_DMA3 (0xffe000000 + 0x102300) +#if defined(CONFIG_PPC_T2080) + u32 srds_prtcl_s2 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS2_PRTCL; + srds_prtcl_s2 >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT; + + switch (srds_prtcl_s2) { + case 0x29: + case 0x2d: + case 0x2e: +#elif defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160) || \ + defined(CONFIG_PPC_T4080) + u32 srds_prtcl_s4 = in_be32(&gur->rcwsr[4]) & + FSL_CORENET2_RCWSR4_SRDS4_PRTCL; + srds_prtcl_s4 >>= FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT; + + switch (srds_prtcl_s4) { + case 6: + case 8: + case 14: + case 16: +#endif + nodeoff = fdt_node_offset_by_compat_reg(blob, "fsl,elo3-dma", + CONFIG_SYS_ELO3_DMA3); + if (nodeoff > 0) + fdt_status_disabled(blob, nodeoff); + else + printf("WARNING: unable to disable dma3\n"); + break; + default: + break; + } +} +#else +#define fdt_fixup_dma3(x) +#endif + #if defined(CONFIG_PPC_T1040) static void fdt_fixup_l2_switch(void *blob) { @@ -778,6 +823,8 @@ void ft_cpu_setup(void *blob, bd_t *bd) fdt_fixup_usb(blob); fdt_fixup_l2_switch(blob); + + fdt_fixup_dma3(blob); } /* |