diff options
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/ahci_imx.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/ata/ahci_imx.c b/drivers/ata/ahci_imx.c index 787567e840bd..8da450ba2eaa 100644 --- a/drivers/ata/ahci_imx.c +++ b/drivers/ata/ahci_imx.c @@ -72,6 +72,8 @@ struct imx_ahci_priv { u32 phy_params; }; +void *sg_io_buffer_hack; + static int ahci_imx_hotplug; module_param_named(hotplug, ahci_imx_hotplug, int, 0644); MODULE_PARM_DESC(hotplug, "AHCI IMX hot-plug support (0=Don't support, 1=support)"); @@ -818,6 +820,24 @@ static int imx_ahci_probe(struct platform_device *pdev) reg_val = clk_get_rate(imxpriv->ahb_clk) / 1000; writel(reg_val, hpriv->mmio + IMX_TIMER1MS); + /* + * Due to IP bug on the Synopsis 3.00 SATA version, + * which is present on mx6q, and not on mx53, + * we should use sg_tablesize = 1 for reliable operation + */ + if (imxpriv->type == AHCI_IMX6Q) { + dma_addr_t dma; + + ahci_platform_sht.sg_tablesize = 1; + + sg_io_buffer_hack = dma_alloc_coherent(NULL, 0x10000, + &dma, GFP_KERNEL); + if (!sg_io_buffer_hack) { + ret = -ENOMEM; + goto disable_sata; + } + } + ret = ahci_platform_init_host(pdev, hpriv, &ahci_imx_port_info, &ahci_platform_sht); if (ret) |