phy: marvell: add SATA comphy RX/TX polarity invert support

This patch adds support to Armada 7k/8k comphy RX/TX lane swap. The
'phy-invert' DT property defines the inverted signals.

Signed-off-by: Rabeeh Khoury <rabeeh@solid-run.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/phy/marvell/comphy_cp110.c b/drivers/phy/marvell/comphy_cp110.c
index 6a60da3..9998c07 100644 (file)
--- a/drivers/phy/marvell/comphy_cp110.c
+++ b/drivers/phy/marvell/comphy_cp110.c
@@ -641,7 +641,8 @@ static int comphy_usb3_power_up(u32 lane, void __iomem *hpipe_base,
 }
 
 static int comphy_sata_power_up(u32 lane, void __iomem *hpipe_base,
-                               void __iomem *comphy_base, int cp_index)
+                               void __iomem *comphy_base, int cp_index,
+                               u32 invert)
 {
        u32 mask, data, i, ret = 1;
        void __iomem *hpipe_addr = HPIPE_ADDR(hpipe_base, lane);
@@ -927,6 +928,19 @@ static int comphy_sata_power_up(u32 lane, void __iomem *hpipe_base,
        reg_set(hpipe_addr + HPIPE_PWR_CTR_REG,
                0x0 << HPIPE_PWR_CTR_RST_DFE_OFFSET,
                HPIPE_PWR_CTR_RST_DFE_MASK);
+
+       /* Set RX / TX swaps */
+       data = mask = 0;
+       if (invert & PHY_POLARITY_TXD_INVERT) {
+               data |= (1 << HPIPE_SYNC_PATTERN_TXD_SWAP_OFFSET);
+               mask |= HPIPE_SYNC_PATTERN_TXD_SWAP_MASK;
+       }
+       if (invert & PHY_POLARITY_RXD_INVERT) {
+               data |= (1 << HPIPE_SYNC_PATTERN_RXD_SWAP_OFFSET);
+               mask |= HPIPE_SYNC_PATTERN_RXD_SWAP_MASK;
+       }
+       reg_set(hpipe_addr + HPIPE_SYNC_PATTERN_REG, data, mask);
+
        /* SW reset for interupt logic */
        reg_set(hpipe_addr + HPIPE_PWR_CTR_REG,
                0x1 << HPIPE_PWR_CTR_SFT_RST_OFFSET,
@@ -2006,7 +2020,8 @@ int comphy_cp110_init(struct chip_serdes_phy_config *ptr_chip_cfg,
                case PHY_TYPE_SATA3:
                        ret = comphy_sata_power_up(
                                lane, hpipe_base_addr, comphy_base_addr,
-                               ptr_chip_cfg->cp_index);
+                               ptr_chip_cfg->cp_index,
+                               serdes_map[lane].invert);
                        break;
                case PHY_TYPE_USB3_HOST0:
                case PHY_TYPE_USB3_HOST1:

diff --git a/drivers/phy/marvell/comphy_hpipe.h b/drivers/phy/marvell/comphy_hpipe.h
index d99da7b..a692035 100644 (file)
--- a/drivers/phy/marvell/comphy_hpipe.h
+++ b/drivers/phy/marvell/comphy_hpipe.h
@@ -221,6 +221,12 @@
        (0x7 << HPIPE_LOOPBACK_SEL_OFFSET)
 
 #define HPIPE_SYNC_PATTERN_REG                  0x090
+#define HPIPE_SYNC_PATTERN_TXD_SWAP_OFFSET     10
+#define HPIPE_SYNC_PATTERN_TXD_SWAP_MASK       \
+       (0x1 << HPIPE_SYNC_PATTERN_TXD_SWAP_OFFSET)
+#define HPIPE_SYNC_PATTERN_RXD_SWAP_OFFSET     11
+#define HPIPE_SYNC_PATTERN_RXD_SWAP_MASK       \
+       (0x1 << HPIPE_SYNC_PATTERN_RXD_SWAP_OFFSET)
 
 #define HPIPE_INTERFACE_REG                    0x94
 #define HPIPE_INTERFACE_GEN_MAX_OFFSET         10