ata: sata_rcar: Disable DIPM mode for r8a7790 ES1

commit aa1cf25887099bba68f1f3879c0d394e08b8779f upstream.

Unlike other SATA R-Car r8a7790 controllers the r8a7790 ES1 SATA R-Car
controller needs to be run with DIPM disabled.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/ata/sata_rcar.txt b/Documentation/devicetree/bindings/ata/sata_rcar.txt
index 1e61113..7dd32d3 100644 (file)
--- a/Documentation/devicetree/bindings/ata/sata_rcar.txt
+++ b/Documentation/devicetree/bindings/ata/sata_rcar.txt
@@ -3,7 +3,8 @@
 Required properties:
 - compatible           : should contain one of the following:
                          - "renesas,sata-r8a7779" for R-Car H1
-                         - "renesas,sata-r8a7790" for R-Car H2
+                         - "renesas,sata-r8a7790-es1" for R-Car H2 ES1
+                         - "renesas,sata-r8a7790" for R-Car H2 other than ES1
                          - "renesas,sata-r8a7791" for R-Car M2
 - reg                  : address and length of the SATA registers;
 - interrupts           : must consist of one interrupt specifier.

diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 2b25bd8..c1ea780 100644 (file)
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -146,6 +146,7 @@
 enum sata_rcar_type {
        RCAR_GEN1_SATA,
        RCAR_GEN2_SATA,
+       RCAR_R8A7790_ES1_SATA,
 };
 
 struct sata_rcar_priv {
@@ -763,6 +764,9 @@ static void sata_rcar_setup_port(struct ata_host *host)
        ap->udma_mask   = ATA_UDMA6;
        ap->flags       |= ATA_FLAG_SATA;
 
+       if (priv->type == RCAR_R8A7790_ES1_SATA)
+               ap->flags       |= ATA_FLAG_NO_DIPM;
+
        ioaddr->cmd_addr = base + SDATA_REG;
        ioaddr->ctl_addr = base + SSDEVCON_REG;
        ioaddr->scr_addr = base + SCRSSTS_REG;
@@ -792,6 +796,7 @@ static void sata_rcar_init_controller(struct ata_host *host)
                sata_rcar_gen1_phy_init(priv);
                break;
        case RCAR_GEN2_SATA:
+       case RCAR_R8A7790_ES1_SATA:
                sata_rcar_gen2_phy_init(priv);
                break;
        default:
@@ -838,6 +843,10 @@ static struct of_device_id sata_rcar_match[] = {
                .data = (void *)RCAR_GEN2_SATA
        },
        {
+               .compatible = "renesas,sata-r8a7790-es1",
+               .data = (void *)RCAR_R8A7790_ES1_SATA
+       },
+       {
                .compatible = "renesas,sata-r8a7791",
                .data = (void *)RCAR_GEN2_SATA
        },
@@ -849,6 +858,7 @@ static const struct platform_device_id sata_rcar_id_table[] = {
        { "sata_rcar", RCAR_GEN1_SATA }, /* Deprecated by "sata-r8a7779" */
        { "sata-r8a7779", RCAR_GEN1_SATA },
        { "sata-r8a7790", RCAR_GEN2_SATA },
+       { "sata-r8a7790-es1", RCAR_R8A7790_ES1_SATA },
        { "sata-r8a7791", RCAR_GEN2_SATA },
        { },
 };