diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.1/171-musb-add-support-for-a31.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.1/171-musb-add-support-for-a31.patch | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/target/linux/sunxi/patches-4.1/171-musb-add-support-for-a31.patch b/target/linux/sunxi/patches-4.1/171-musb-add-support-for-a31.patch deleted file mode 100644 index af958f2b4f..0000000000 --- a/target/linux/sunxi/patches-4.1/171-musb-add-support-for-a31.patch +++ /dev/null @@ -1,162 +0,0 @@ -From 132e23775779cc895c37f7883c33a60a1a8a7cdd Mon Sep 17 00:00:00 2001 -From: Hans de Goede <hdegoede@redhat.com> -Date: Wed, 8 Jul 2015 16:41:39 +0200 -Subject: [PATCH] usb: musb: sunxi: Add support for musb controller in A31 SoC - -The A31 SoC uses the same musb controller as found in earlier SoCs, but it -is hooked up slightly different. Its SRAM is private and no longer controlled -through the SRAM controller, and its reset is controlled via a separate -reset controller. This commit adds support for this setup. - -Signed-off-by: Hans de Goede <hdegoede@redhat.com> -Signed-off-by: Felipe Balbi <balbi@ti.com> ---- - .../bindings/usb/allwinner,sun4i-a10-musb.txt | 3 +- - drivers/usb/musb/sunxi.c | 50 +++++++++++++++++++--- - 2 files changed, 46 insertions(+), 7 deletions(-) - ---- a/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt -+++ b/Documentation/devicetree/bindings/usb/allwinner,sun4i-a10-musb.txt -@@ -2,9 +2,10 @@ Allwinner sun4i A10 musb DRC/OTG control - ------------------------------------------- - - Required properties: -- - compatible : "allwinner,sun4i-a10-musb" -+ - compatible : "allwinner,sun4i-a10-musb" or "allwinner,sun6i-a31-musb" - - reg : mmio address range of the musb controller - - clocks : clock specifier for the musb controller ahb gate clock -+ - reset : reset specifier for the ahb reset (A31 and newer only) - - interrupts : interrupt to which the musb controller is connected - - interrupt-names : must be "mc" - - phys : phy specifier for the otg phy ---- a/drivers/usb/musb/sunxi.c -+++ b/drivers/usb/musb/sunxi.c -@@ -26,6 +26,7 @@ - #include <linux/of.h> - #include <linux/phy/phy-sun4i-usb.h> - #include <linux/platform_device.h> -+#include <linux/reset.h> - #include <linux/soc/sunxi/sunxi_sram.h> - #include <linux/usb/musb.h> - #include <linux/usb/of.h> -@@ -70,6 +71,8 @@ - #define SUNXI_MUSB_FL_HOSTMODE_PEND 2 - #define SUNXI_MUSB_FL_VBUS_ON 3 - #define SUNXI_MUSB_FL_PHY_ON 4 -+#define SUNXI_MUSB_FL_HAS_SRAM 5 -+#define SUNXI_MUSB_FL_HAS_RESET 6 - - /* Our read/write methods need access and do not get passed in a musb ref :| */ - static struct musb *sunxi_musb; -@@ -78,6 +81,7 @@ struct sunxi_glue { - struct device *dev; - struct platform_device *musb; - struct clk *clk; -+ struct reset_control *rst; - struct phy *phy; - struct platform_device *usb_phy; - struct usb_phy *xceiv; -@@ -229,14 +233,22 @@ static int sunxi_musb_init(struct musb * - musb->phy = glue->phy; - musb->xceiv = glue->xceiv; - -- ret = sunxi_sram_claim(musb->controller->parent); -- if (ret) -- return ret; -+ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) { -+ ret = sunxi_sram_claim(musb->controller->parent); -+ if (ret) -+ return ret; -+ } - - ret = clk_prepare_enable(glue->clk); - if (ret) - goto error_sram_release; - -+ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) { -+ ret = reset_control_deassert(glue->rst); -+ if (ret) -+ goto error_clk_disable; -+ } -+ - writeb(SUNXI_MUSB_VEND0_PIO_MODE, musb->mregs + SUNXI_MUSB_VEND0); - - /* Register notifier before calling phy_init() */ -@@ -244,7 +256,7 @@ static int sunxi_musb_init(struct musb * - ret = extcon_register_notifier(glue->extcon, EXTCON_USB_HOST, - &glue->host_nb); - if (ret) -- goto error_clk_disable; -+ goto error_reset_assert; - } - - ret = phy_init(glue->phy); -@@ -273,10 +285,14 @@ error_unregister_notifier: - if (musb->port_mode == MUSB_PORT_MODE_DUAL_ROLE) - extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST, - &glue->host_nb); -+error_reset_assert: -+ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) -+ reset_control_assert(glue->rst); - error_clk_disable: - clk_disable_unprepare(glue->clk); - error_sram_release: -- sunxi_sram_release(musb->controller->parent); -+ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) -+ sunxi_sram_release(musb->controller->parent); - return ret; - } - -@@ -296,8 +312,12 @@ static int sunxi_musb_exit(struct musb * - extcon_unregister_notifier(glue->extcon, EXTCON_USB_HOST, - &glue->host_nb); - -+ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) -+ reset_control_assert(glue->rst); -+ - clk_disable_unprepare(glue->clk); -- sunxi_sram_release(musb->controller->parent); -+ if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) -+ sunxi_sram_release(musb->controller->parent); - - return 0; - } -@@ -617,6 +637,12 @@ static int sunxi_musb_probe(struct platf - INIT_WORK(&glue->work, sunxi_musb_work); - glue->host_nb.notifier_call = sunxi_musb_host_notifier; - -+ if (of_device_is_compatible(np, "allwinner,sun4i-a10-musb")) -+ set_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags); -+ -+ if (of_device_is_compatible(np, "allwinner,sun6i-a31-musb")) -+ set_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags); -+ - glue->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(glue->clk)) { - dev_err(&pdev->dev, "Error getting clock: %ld\n", -@@ -624,6 +650,17 @@ static int sunxi_musb_probe(struct platf - return PTR_ERR(glue->clk); - } - -+ if (test_bit(SUNXI_MUSB_FL_HAS_RESET, &glue->flags)) { -+ glue->rst = devm_reset_control_get(&pdev->dev, NULL); -+ if (IS_ERR(glue->rst)) { -+ if (PTR_ERR(glue->rst) == -EPROBE_DEFER) -+ return -EPROBE_DEFER; -+ dev_err(&pdev->dev, "Error getting reset %ld\n", -+ PTR_ERR(glue->rst)); -+ return PTR_ERR(glue->rst); -+ } -+ } -+ - glue->phy = devm_phy_get(&pdev->dev, "usb"); - if (IS_ERR(glue->phy)) { - if (PTR_ERR(glue->phy) == -EPROBE_DEFER) -@@ -685,6 +722,7 @@ static int sunxi_musb_remove(struct plat - - static const struct of_device_id sunxi_musb_match[] = { - { .compatible = "allwinner,sun4i-a10-musb", }, -+ { .compatible = "allwinner,sun6i-a31-musb", }, - {} - }; - |