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-rw-r--r--drivers/ata/sata_fsl.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 2ddb567f165b..7f9eab34a386 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -185,6 +185,11 @@ enum {
COMMANDSTAT = 0x20,
};
+/* TRANSCFG (transport-layer) configuration control */
+enum {
+ TRANSCFG_RX_WATER_MARK = (1 << 4),
+};
+
/* PHY (link-layer) configuration control */
enum {
PHY_BIST_ENABLE = 0x01,
@@ -1305,6 +1310,7 @@ static int sata_fsl_probe(struct platform_device *ofdev,
struct sata_fsl_host_priv *host_priv = NULL;
int irq;
struct ata_host *host;
+ u32 temp;
struct ata_port_info pi = sata_fsl_port_info[0];
const struct ata_port_info *ppi[] = { &pi, NULL };
@@ -1319,6 +1325,12 @@ static int sata_fsl_probe(struct platform_device *ofdev,
ssr_base = hcr_base + 0x100;
csr_base = hcr_base + 0x140;
+ if (!of_device_is_compatible(ofdev->dev.of_node, "fsl,mpc8315-sata")) {
+ temp = ioread32(csr_base + TRANSCFG);
+ temp = temp & 0xffffffe0;
+ iowrite32(temp | TRANSCFG_RX_WATER_MARK, csr_base + TRANSCFG);
+ }
+
DPRINTK("@reset i/o = 0x%x\n", ioread32(csr_base + TRANSCFG));
DPRINTK("sizeof(cmd_desc) = %d\n", sizeof(struct command_desc));
DPRINTK("sizeof(#define cmd_desc) = %d\n", SATA_FSL_CMD_DESC_SIZE);