ahci: qoriq: Update the default Rx watermark value

The PTC[RXWM] sets the watermark value for Rx FIFO. The default
value 0x20 might be insufficient for some hard drives. If the
watermark value is too small, a single-cycle overflow may occur
and is reported as a CRC or internal error in the PxSERR register.
Updated the value to 0x29 according to the validation test.
All LS platforms are affected.

Signed-off-by: Tang Yuantian <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

drivers/ata/ahci_qoriq.c

···
 #define AHCI_PORT_PHY_3_CFG	0x0e081004
 #define AHCI_PORT_PHY_4_CFG	0x00480811
 #define AHCI_PORT_PHY_5_CFG	0x192c96a4
-#define AHCI_PORT_TRANS_CFG	0x08000025
+#define AHCI_PORT_TRANS_CFG	0x08000029
 #define LS1043A_PORT_PHY2	0x28184d1f
 #define LS1043A_PORT_PHY3	0x0e081509
 
···
 
 	case AHCI_LS2080A:
 		writel(AHCI_PORT_PHY_1_CFG, reg_base + PORT_PHY1);
+		writel(AHCI_PORT_TRANS_CFG, reg_base + PORT_TRANS);
 		break;
 	}