Hello.
On 10/16/2014 9:50 AM, Simon Horman wrote:
Unlike other SATA R-Car r8a7790 controllers the r8a7790 ES1 SATA R-Car
controller needs to be run with DIPM disabled.
Loosely based on work by Koji Matsuoka.
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
This patch is against for-next branch of Tejun's libata tree.
Documentation/devicetree/bindings/ata/sata_rcar.txt | 3 ++-
drivers/ata/sata_rcar.c | 10 ++++++++++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/ata/sata_rcar.txt b/Documentation/devicetree/bindings/ata/sata_rcar.txt
index 1e61113..7dd32d3 100644
--- 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 61eb6d7..d5cacb5 100644
--- 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,
Hm, can't we read the SoC revision somewhere?
};
struct sata_rcar_priv {
@@ -763,6 +764,10 @@ 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;
+ }
{} not needed here.
[...]
Back home, Sergei
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