arm: ls102xa: enable all the snoop signal for masters.

Enable the IP feature's snoop signal to support
hardware snoop for cache coherence.

SNPCNFGCR contains the bits to drive snoop signal
for various masters.

Signed-off-by: Yuan Yao <yao.yuan@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
index 0fdd6d4..6036473 100644 (file)
--- a/arch/arm/cpu/armv7/ls102xa/soc.c
+++ b/arch/arm/cpu/armv7/ls102xa/soc.c
@@ -62,5 +62,13 @@ int arch_soc_init(void)
                out_le32(&cci->ctrl_ord, CCI400_CTRLORD_TERM_BARRIER);
        }
 
+       /* Enable all the snoop signal for various masters */
+       out_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SEC_RD_WR |
+                               SCFG_SNPCNFGCR_DCU_RD_WR |
+                               SCFG_SNPCNFGCR_SATA_RD_WR |
+                               SCFG_SNPCNFGCR_USB3_RD_WR |
+                               SCFG_SNPCNFGCR_DBG_RD_WR |
+                               SCFG_SNPCNFGCR_EDMA_SNP);
+
        return 0;
 }

diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
index c12706d..9317272 100644 (file)
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -152,6 +152,12 @@ struct ccsr_gur {
 #define SCFG_ETSECCMCR_GE1_CLK125      0x08000000
 #define SCFG_PIXCLKCR_PXCKEN           0x80000000
 #define SCFG_QSPI_CLKSEL               0xc0100000
+#define SCFG_SNPCNFGCR_SEC_RD_WR       0xc0000000
+#define SCFG_SNPCNFGCR_DCU_RD_WR       0x03000000
+#define SCFG_SNPCNFGCR_SATA_RD_WR      0x00c00000
+#define SCFG_SNPCNFGCR_USB3_RD_WR      0x00300000
+#define SCFG_SNPCNFGCR_DBG_RD_WR       0x000c0000
+#define SCFG_SNPCNFGCR_EDMA_SNP                0x00020000
 #define SCFG_ENDIANCR_LE               0x80000000
 
 /* Supplemental Configuration Unit */