[U-Boot] [PATCH 2/5] arm: ls102xa: enable all the snoop signal for masters.

Yuan Yao
2015-10-21T10:14:54Z

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>
---
arch/arm/cpu/armv7/ls102xa/soc.c | 8 ++++++++
arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 6 ++++++
2 files changed, 14 insertions(+)

diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
index 0fdd6d4..6036473 100644
--- 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 60aa0d3..950347a 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -149,6 +149,12 @@ 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 */
--
2.1.0.27.g96db324