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| author |   William wu <wulf@rock-chips.com> | 2016-12-21 18:41:05 +0800 |
|---|---|---|
| committer |   Heiko Stuebner <heiko@sntech.de> | 2017-01-02 14:25:10 +0100 |
| commit | b5d1c57299734f5b54035ef2e61706b83041f20c (patch) | |
| tree | 946b1d6e278f0832e9e84136afedcac265e06720 /arch/arm64/boot/dts/rockchip | |
| parent | arm64: dts: rockchip: add rk3399 eDP HPD pinctrl (diff) | |
| download | linux-dev-b5d1c57299734f5b54035ef2e61706b83041f20c.tar.xz linux-dev-b5d1c57299734f5b54035ef2e61706b83041f20c.zip | |
arm64: dts: rockchip: add u2phy clock for ehci and ohci of rk3399
We found that the suspend process was blocked when it run into
ehci/ohci module due to clk-480m of usb2-phy was disabled.
The root cause is that usb2-phy suspended earlier than ehci/ohci
(usb2-phy will be auto suspended if no devices plug-in). and the
clk-480m provided by it was disabled if no module used. However,
some suspend process related ehci/ohci are base on this clock,
so we should refer it into ehci/ohci driver to prevent this case.
The u2phy clock flow like this:
===
u2phy ________________
| | |-----> UTMI_CLK ---------> | EHCI |
OSC_24M ---|---> PHY_PLL----|----|
|________^_______| |-----> 480M_CLK ---|G|---> | USBPHY_480M_SRC| ----> USBPHY_480M for SoC
|
|
GRF
===
Signed-off-by: William wu <wulf@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'arch/arm64/boot/dts/rockchip')
| -rw-r--r-- | arch/arm64/boot/dts/rockchip/rk3399.dtsi | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index fc0642d7eab2..3761d061c173 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -321,8 +321,10 @@ compatible = "generic-ehci"; reg = <0x0 0xfe380000 0x0 0x20000>; interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>; - clock-names = "hclk_host0", "hclk_host0_arb"; + clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>, + <&u2phy0>; + clock-names = "usbhost", "arbiter", + "utmi"; phys = <&u2phy0_host>; phy-names = "usb"; status = "disabled"; @@ -332,8 +334,12 @@ compatible = "generic-ohci"; reg = <0x0 0xfe3a0000 0x0 0x20000>; interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>; - clock-names = "hclk_host0", "hclk_host0_arb"; + clocks = <&cru HCLK_HOST0>, <&cru HCLK_HOST0_ARB>, + <&u2phy0>; + clock-names = "usbhost", "arbiter", + "utmi"; + phys = <&u2phy0_host>; + phy-names = "usb"; status = "disabled"; }; @@ -341,8 +347,10 @@ compatible = "generic-ehci"; reg = <0x0 0xfe3c0000 0x0 0x20000>; interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&cru HCLK_HOST1>, <&cru HCLK_HOST1_ARB>; - clock-names = "hclk_host1", "hclk_host1_arb"; + clocks = <&cru HCLK_HOST1>, <&cru HCLK_HOST1_ARB>, + <&u2phy1>; + clock-names = "usbhost", "arbiter", + "utmi"; phys = <&u2phy1_host>; phy-names = "usb"; status = "disabled"; @@ -352,8 +360,12 @@ compatible = "generic-ohci"; reg = <0x0 0xfe3e0000 0x0 0x20000>; interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH 0>; - clocks = <&cru HCLK_HOST1>, <&cru HCLK_HOST1_ARB>; - clock-names = "hclk_host1", "hclk_host1_arb"; + clocks = <&cru HCLK_HOST1>, <&cru HCLK_HOST1_ARB>, + <&u2phy1>; + clock-names = "usbhost", "arbiter", + "utmi"; + phys = <&u2phy1_host>; + phy-names = "usb"; status = "disabled"; }; |