From b5d1c57299734f5b54035ef2e61706b83041f20c Mon Sep 17 00:00:00 2001 From: William wu Date: Wed, 21 Dec 2016 18:41:05 +0800 Subject: 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 Signed-off-by: Xing Zheng Reviewed-by: Douglas Anderson Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399.dtsi | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) (limited to 'arch/arm64/boot/dts/rockchip') 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 = ; - 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 = ; - 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 = ; - 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 = ; - 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"; }; -- cgit v1.2.3-59-g8ed1b