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Subject[PATCH v5 3/3] ahci: add support for Hisilicon sata
Date
The hip04 SoC of hisilicon has an AHCI compliant SATA controller,
and it is compliant with the ahci 1.3 and sata 3.0 specification.

There is a wrong bit in HOST_CAP of hip04 sata controller, which
enable unsupported feature of FBS, use AHCI_HFLAG_NO_FBS hflag to
disable it.

Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
---
.../devicetree/bindings/ata/ahci-platform.txt | 3 ++-
drivers/ata/ahci_platform.c | 8 +++++++-
2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index 48b285f..aab1d70 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -7,7 +7,8 @@ Required properties:
- compatible : compatible list, one of "snps,spear-ahci",
"snps,exynos5440-ahci", "ibm,476gtr-ahci",
"allwinner,sun4i-a10-ahci", "fsl,imx53-ahci"
- "fsl,imx6q-ahci" or "snps,dwc-ahci"
+ "fsl,imx6q-ahci", "snps,dwc-ahci" or
+ "hisilicon,hisi-ahci"
- interrupts : <interrupt mapping for SATA IRQ>
- reg : <registers mapping>

diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index a476a1f..10d41c3 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -16,6 +16,7 @@
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/device.h>
+#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/libata.h>
#include <linux/ahci_platform.h>
@@ -33,6 +34,7 @@ static int ahci_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct ahci_platform_data *pdata = dev_get_platdata(dev);
struct ahci_host_priv *hpriv;
+ unsigned int hflags = 0;
int rc;

hpriv = ahci_platform_get_resources(pdev);
@@ -55,7 +57,11 @@ static int ahci_probe(struct platform_device *pdev)
goto disable_resources;
}

- rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 0, 0, 0);
+ if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
+ hflags |= AHCI_HFLAG_NO_FBS;
+
+ rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
+ hflags, 0, 0);
if (rc)
goto pdata_exit;

--
1.7.9.5


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