diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0131-usb-xhci-mtk-add-optional-mcu-and-dma-bus-clocks.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0131-usb-xhci-mtk-add-optional-mcu-and-dma-bus-clocks.patch | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/target/linux/mediatek/patches-4.14/0131-usb-xhci-mtk-add-optional-mcu-and-dma-bus-clocks.patch b/target/linux/mediatek/patches-4.14/0131-usb-xhci-mtk-add-optional-mcu-and-dma-bus-clocks.patch deleted file mode 100644 index 264cd25e7f..0000000000 --- a/target/linux/mediatek/patches-4.14/0131-usb-xhci-mtk-add-optional-mcu-and-dma-bus-clocks.patch +++ /dev/null @@ -1,139 +0,0 @@ -From 9dce908d64ffb8b0ab71cb3a4b79db398d2e6dc3 Mon Sep 17 00:00:00 2001 -From: Chunfeng Yun <chunfeng.yun@mediatek.com> -Date: Fri, 13 Oct 2017 16:26:38 +0800 -Subject: [PATCH 131/224] usb: xhci-mtk: add optional mcu and dma bus clocks - -There are mcu_bus and dma_bus clocks needed to be controlled by -driver on some SoCs, so add them as optional ones - -Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> -Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com> -Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/usb/host/xhci-mtk.c | 79 ++++++++++++++++++++++++++++++++++----------- - drivers/usb/host/xhci-mtk.h | 2 ++ - 2 files changed, 62 insertions(+), 19 deletions(-) - ---- a/drivers/usb/host/xhci-mtk.c -+++ b/drivers/usb/host/xhci-mtk.c -@@ -221,6 +221,44 @@ static int xhci_mtk_ssusb_config(struct - return xhci_mtk_host_enable(mtk); - } - -+/* ignore the error if the clock does not exist */ -+static struct clk *optional_clk_get(struct device *dev, const char *id) -+{ -+ struct clk *opt_clk; -+ -+ opt_clk = devm_clk_get(dev, id); -+ /* ignore error number except EPROBE_DEFER */ -+ if (IS_ERR(opt_clk) && (PTR_ERR(opt_clk) != -EPROBE_DEFER)) -+ opt_clk = NULL; -+ -+ return opt_clk; -+} -+ -+static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk) -+{ -+ struct device *dev = mtk->dev; -+ -+ mtk->sys_clk = devm_clk_get(dev, "sys_ck"); -+ if (IS_ERR(mtk->sys_clk)) { -+ dev_err(dev, "fail to get sys_ck\n"); -+ return PTR_ERR(mtk->sys_clk); -+ } -+ -+ mtk->ref_clk = optional_clk_get(dev, "ref_ck"); -+ if (IS_ERR(mtk->ref_clk)) -+ return PTR_ERR(mtk->ref_clk); -+ -+ mtk->mcu_clk = optional_clk_get(dev, "mcu_ck"); -+ if (IS_ERR(mtk->mcu_clk)) -+ return PTR_ERR(mtk->mcu_clk); -+ -+ mtk->dma_clk = optional_clk_get(dev, "dma_ck"); -+ if (IS_ERR(mtk->dma_clk)) -+ return PTR_ERR(mtk->dma_clk); -+ -+ return 0; -+} -+ - static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) - { - int ret; -@@ -237,16 +275,34 @@ static int xhci_mtk_clks_enable(struct x - goto sys_clk_err; - } - -+ ret = clk_prepare_enable(mtk->mcu_clk); -+ if (ret) { -+ dev_err(mtk->dev, "failed to enable mcu_clk\n"); -+ goto mcu_clk_err; -+ } -+ -+ ret = clk_prepare_enable(mtk->dma_clk); -+ if (ret) { -+ dev_err(mtk->dev, "failed to enable dma_clk\n"); -+ goto dma_clk_err; -+ } -+ - return 0; - -+dma_clk_err: -+ clk_disable_unprepare(mtk->mcu_clk); -+mcu_clk_err: -+ clk_disable_unprepare(mtk->sys_clk); - sys_clk_err: - clk_disable_unprepare(mtk->ref_clk); - ref_clk_err: -- return -EINVAL; -+ return ret; - } - - static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) - { -+ clk_disable_unprepare(mtk->dma_clk); -+ clk_disable_unprepare(mtk->mcu_clk); - clk_disable_unprepare(mtk->sys_clk); - clk_disable_unprepare(mtk->ref_clk); - } -@@ -529,24 +585,9 @@ static int xhci_mtk_probe(struct platfor - return PTR_ERR(mtk->vusb33); - } - -- mtk->sys_clk = devm_clk_get(dev, "sys_ck"); -- if (IS_ERR(mtk->sys_clk)) { -- dev_err(dev, "fail to get sys_ck\n"); -- return PTR_ERR(mtk->sys_clk); -- } -- -- /* -- * reference clock is usually a "fixed-clock", make it optional -- * for backward compatibility and ignore the error if it does -- * not exist. -- */ -- mtk->ref_clk = devm_clk_get(dev, "ref_ck"); -- if (IS_ERR(mtk->ref_clk)) { -- if (PTR_ERR(mtk->ref_clk) == -EPROBE_DEFER) -- return -EPROBE_DEFER; -- -- mtk->ref_clk = NULL; -- } -+ ret = xhci_mtk_clks_get(mtk); -+ if (ret) -+ return ret; - - mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable"); - /* optional property, ignore the error if it does not exist */ ---- a/drivers/usb/host/xhci-mtk.h -+++ b/drivers/usb/host/xhci-mtk.h -@@ -126,6 +126,8 @@ struct xhci_hcd_mtk { - struct regulator *vbus; - struct clk *sys_clk; /* sys and mac clock */ - struct clk *ref_clk; -+ struct clk *mcu_clk; -+ struct clk *dma_clk; - struct regmap *pericfg; - struct phy **phys; - int num_phys; |