diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-11-05 14:38:28 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2014-11-11 13:16:37 +0800 |
| commit | 48ebdd800ff8f7075dfb7fa217e5b33a4b39bbc9 (patch) | |
| tree | 5e56345bc7e827eddbc24949c70b788e59666907 /drivers | |
| parent | a6bf7a97a83a58b9fe6de91975e4203c235036be (diff) | |
MLK-9785-3 usb: chipidea: imx: change ahb burst setting
For imx6, below AHB burst setting are better performance:
- Incremental burst of unspecified length, see SBUSCFG, $BASE + 0x90
- Set Both RX/TX burst size as 16 DWords, see BURSTSIZE, $BASE + 0x160
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/chipidea/ci_hdrc_imx.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 6040f6685d33..74a91e497318 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -33,6 +33,8 @@ struct ci_hdrc_imx_platform_flag { unsigned int flags; + u32 ahbburst_config; + u32 burst_length; }; static const struct ci_hdrc_imx_platform_flag imx27_usb_data = { @@ -52,19 +54,31 @@ static const struct ci_hdrc_imx_platform_flag imx28_usb_data = { static const struct ci_hdrc_imx_platform_flag imx6q_usb_data = { .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | CI_HDRC_IMX_EHCI_QUIRK | - CI_HDRC_DISABLE_STREAMING, + CI_HDRC_DISABLE_STREAMING | + CI_HDRC_OVERRIDE_AHB_BURST | + CI_HDRC_OVERRIDE_BURST_LENGTH, + .ahbburst_config = 0, /*bit0 - bit2 at $BASE + 0x90 */ + .burst_length = 0x1010, /*bit0 - bit15 at $BASE + 0x160 */ }; static const struct ci_hdrc_imx_platform_flag imx6sl_usb_data = { .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | CI_HDRC_IMX_EHCI_QUIRK | - CI_HDRC_DISABLE_HOST_STREAMING, + CI_HDRC_DISABLE_HOST_STREAMING | + CI_HDRC_OVERRIDE_AHB_BURST | + CI_HDRC_OVERRIDE_BURST_LENGTH, + .ahbburst_config = 0, + .burst_length = 0x1010, }; static const struct ci_hdrc_imx_platform_flag imx6sx_usb_data = { .flags = CI_HDRC_SUPPORTS_RUNTIME_PM | CI_HDRC_IMX_EHCI_QUIRK | - CI_HDRC_DISABLE_HOST_STREAMING, + CI_HDRC_DISABLE_HOST_STREAMING | + CI_HDRC_OVERRIDE_AHB_BURST | + CI_HDRC_OVERRIDE_BURST_LENGTH, + .ahbburst_config = 0, + .burst_length = 0x1010, }; static const struct of_device_id ci_hdrc_imx_dt_ids[] = { @@ -388,6 +402,12 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) } } + if (imx_platform_flag->flags & CI_HDRC_OVERRIDE_AHB_BURST) + pdata.ahbburst_config = imx_platform_flag->ahbburst_config; + + if (imx_platform_flag->flags & CI_HDRC_OVERRIDE_BURST_LENGTH) + pdata.burst_length = imx_platform_flag->burst_length; + data->ci_pdev = ci_hdrc_add_device(&pdev->dev, pdev->resource, pdev->num_resources, &pdata); |