armv8: fsl-lsch2: enable snoopable sata read and write
By default the SATA IP on the ls1043a/ls1046a SoCs does not
generating coherent/snoopable transactions. This patch enable
it in the SCFG_SNPCNFGCR register along with sata axicc register.
In addition, the dma-coherent property must be set on the SATA
controller nodes.
Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
[York Sun: Reformatted commit message]
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index 4b425b8..aa6a184 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -234,6 +234,7 @@
#endif
out_le32(&ccsr_ahci->ppcfg, AHCI_PORT_PHY_1_CFG);
out_le32(&ccsr_ahci->ptc, AHCI_PORT_TRANS_CFG);
+ out_le32(&ccsr_ahci->axicc, AHCI_PORT_AXICC_CFG);
ahci_init((void __iomem *)CONFIG_SYS_SATA);
scsi_scan(0);
@@ -337,7 +338,9 @@
#endif
/* Make SEC reads and writes snoopable */
setbits_be32(&scfg->snpcnfgcr, SCFG_SNPCNFGCR_SECRDSNP |
- SCFG_SNPCNFGCR_SECWRSNP);
+ SCFG_SNPCNFGCR_SECWRSNP |
+ SCFG_SNPCNFGCR_SATARDSNP |
+ SCFG_SNPCNFGCR_SATAWRSNP);
/*
* Enable snoop requests and DVM message requests for
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
index df51871..3d00909 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
@@ -335,6 +335,8 @@
#define SCFG_SNPCNFGCR_SECRDSNP 0x80000000
#define SCFG_SNPCNFGCR_SECWRSNP 0x40000000
+#define SCFG_SNPCNFGCR_SATARDSNP 0x00800000
+#define SCFG_SNPCNFGCR_SATAWRSNP 0x00400000
/* Supplemental Configuration Unit */
struct ccsr_scfg {
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/soc.h b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
index 0729b7f..58e90d8 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/soc.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
@@ -61,6 +61,7 @@
/* ahci port register default value */
#define AHCI_PORT_PHY_1_CFG 0xa003fffe
#define AHCI_PORT_TRANS_CFG 0x08000029
+#define AHCI_PORT_AXICC_CFG 0x3fffffff
/* AHCI (sata) register map */
struct ccsr_ahci {