On Mon, Sep 14, 2020 at 07:26:56PM +0800, Chuanjia Liu wrote: > Split the PCIe node and add pciecfg node to fix MSI issue. What's the MSI issue? This is not a compatible change. Please explain why that's okay. > > Signed-off-by: Chuanjia Liu <chuanjia.liu@xxxxxxxxxxxx> > Acked-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx> > --- > .../bindings/pci/mediatek-pcie-cfg.yaml | 37 +++++ > .../devicetree/bindings/pci/mediatek-pcie.txt | 139 +++++++++++------- > 2 files changed, 123 insertions(+), 53 deletions(-) > create mode 100644 Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml > > diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml > new file mode 100644 > index 000000000000..cd72973c99d5 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-cfg.yaml > @@ -0,0 +1,37 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pci/mediatek-pcie-cfg.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Mediatek PCIECFG controller > + > +maintainers: > + - Chuanjia Liu <chuanjia.liu@xxxxxxxxxxxx> > + - Jianjun Wang <jianjun.wang@xxxxxxxxxxxx> > + > +description: | > + The MediaTek PCIECFG controller controls some feature about > + LTSSM, ASPM and so on. > + > +properties: > + compatible: > + items: > + - enum: > + - mediatek,generic-pciecfg > + - const: syscon > + > + reg: > + maxItems: 1 > + > +required: > + - compatible > + - reg additionalProperties: false > + > +examples: > + - | > + pciecfg: pciecfg@1a140000 { > + compatible = "mediatek,generic-pciecfg", "syscon"; > + reg = <0x1a140000 0x1000>; > + }; > +... > diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt > index 7468d666763a..f849703dfb17 100644 > --- a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt > +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt > @@ -8,7 +8,7 @@ Required properties: > "mediatek,mt7623-pcie" > "mediatek,mt7629-pcie" > - device_type: Must be "pci" > -- reg: Base addresses and lengths of the PCIe subsys and root ports. > +- reg: Base addresses and lengths of the root ports. > - reg-names: Names of the above areas to use during resource lookup. > - #address-cells: Address representation for root ports (must be 3) > - #size-cells: Size representation for root ports (must be 2) > @@ -19,10 +19,10 @@ Required properties: > - sys_ckN :transaction layer and data link layer clock > Required entries for MT2701/MT7623: > - free_ck :for reference clock of PCIe subsys > - Required entries for MT2712/MT7622: > + Required entries for MT2712/MT7622/MT7629: Seems like a unrelated change. > - ahb_ckN :AHB slave interface operating clock for CSR access and RC > initiated MMIO access > - Required entries for MT7622: > + Required entries for MT7622/MT7629: > - axi_ckN :application layer MMIO channel operating clock > - aux_ckN :pe2_mac_bridge and pe2_mac_core operating clock when > pcie_mac_ck/pcie_pipe_ck is turned off > @@ -47,7 +47,7 @@ Required properties for MT7623/MT2701: > - reset-names: Must be "pcie-rst0", "pcie-rst1", "pcie-rstN".. based on the > number of root ports. > > -Required properties for MT2712/MT7622: > +Required properties for MT2712/MT7622/MT7629: > -interrupts: A list of interrupt outputs of the controller, must have one > entry for each PCIe port > > @@ -143,56 +143,73 @@ Examples for MT7623: > > Examples for MT2712: > > - pcie: pcie@11700000 { > + pcie1: pcie@112ff000 { > compatible = "mediatek,mt2712-pcie"; > device_type = "pci"; > - reg = <0 0x11700000 0 0x1000>, > - <0 0x112ff000 0 0x1000>; > - reg-names = "port0", "port1"; > + reg = <0 0x112ff000 0 0x1000>; > + reg-names = "port1"; > #address-cells = <3>; > #size-cells = <2>; > - interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>, > - <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>; > - clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>, > - <&topckgen CLK_TOP_PE2_MAC_P1_SEL>, > - <&pericfg CLK_PERI_PCIE0>, > + interrupts = <GIC_SPI 117 IRQ_TYPE_LEVEL_HIGH>; > + interrupt-names = "pcie_irq"; > + clocks = <&topckgen CLK_TOP_PE2_MAC_P1_SEL>, > <&pericfg CLK_PERI_PCIE1>; > - clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1"; > - phys = <&pcie0_phy PHY_TYPE_PCIE>, <&pcie1_phy PHY_TYPE_PCIE>; > - phy-names = "pcie-phy0", "pcie-phy1"; > + clock-names = "sys_ck1", "ahb_ck1"; > + phys = <&u3port1 PHY_TYPE_PCIE>; > + phy-names = "pcie-phy1"; > bus-range = <0x00 0xff>; > - ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>; > + ranges = <0x82000000 0 0x11400000 0x0 0x11400000 0 0x300000>; > + status = "disabled"; Don't show status in examples. > > - pcie0: pcie@0,0 { > - reg = <0x0000 0 0 0 0>; > + slot1: pcie@1,0 { Since you are breaking everything, you don't really need these child nodes. Just move interrupt-map and interrupt-controller up to the parent like other PCI host bindings. > + reg = <0x0800 0 0 0 0>; > #address-cells = <3>; > #size-cells = <2>; > #interrupt-cells = <1>; > ranges; > interrupt-map-mask = <0 0 0 7>; > - interrupt-map = <0 0 0 1 &pcie_intc0 0>, > - <0 0 0 2 &pcie_intc0 1>, > - <0 0 0 3 &pcie_intc0 2>, > - <0 0 0 4 &pcie_intc0 3>; > - pcie_intc0: interrupt-controller { > + interrupt-map = <0 0 0 1 &pcie_intc1 0>, > + <0 0 0 2 &pcie_intc1 1>, > + <0 0 0 3 &pcie_intc1 2>, > + <0 0 0 4 &pcie_intc1 3>; > + pcie_intc1: interrupt-controller { > interrupt-controller; > #address-cells = <0>; > #interrupt-cells = <1>; > }; > }; > + }; > > - pcie1: pcie@1,0 { > - reg = <0x0800 0 0 0 0>; > + pcie0: pcie@11700000 { > + compatible = "mediatek,mt2712-pcie"; > + device_type = "pci"; > + reg = <0 0x11700000 0 0x1000>; > + reg-names = "port0"; > + #address-cells = <3>; > + #size-cells = <2>; > + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>; > + interrupt-names = "pcie_irq"; > + clocks = <&topckgen CLK_TOP_PE2_MAC_P0_SEL>, > + <&pericfg CLK_PERI_PCIE0>; > + clock-names = "sys_ck0", "ahb_ck0"; > + phys = <&u3port0 PHY_TYPE_PCIE>; > + phy-names = "pcie-phy0"; > + bus-range = <0x00 0xff>; > + ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>; > + status = "disabled"; > + > + slot0: pcie@0,0 { > + reg = <0x0000 0 0 0 0>; > #address-cells = <3>; > #size-cells = <2>; > #interrupt-cells = <1>; > ranges; > interrupt-map-mask = <0 0 0 7>; > - interrupt-map = <0 0 0 1 &pcie_intc1 0>, > - <0 0 0 2 &pcie_intc1 1>, > - <0 0 0 3 &pcie_intc1 2>, > - <0 0 0 4 &pcie_intc1 3>; > - pcie_intc1: interrupt-controller { > + interrupt-map = <0 0 0 1 &pcie_intc0 0>, > + <0 0 0 2 &pcie_intc0 1>, > + <0 0 0 3 &pcie_intc0 2>, > + <0 0 0 4 &pcie_intc0 3>; > + pcie_intc0: interrupt-controller { > interrupt-controller; > #address-cells = <0>; > #interrupt-cells = <1>; > @@ -202,39 +219,30 @@ Examples for MT2712: > > Examples for MT7622: > > - pcie: pcie@1a140000 { > + pcie0: pcie@1a143000 { > compatible = "mediatek,mt7622-pcie"; > device_type = "pci"; > - reg = <0 0x1a140000 0 0x1000>, > - <0 0x1a143000 0 0x1000>, > - <0 0x1a145000 0 0x1000>; > - reg-names = "subsys", "port0", "port1"; > + reg = <0 0x1a143000 0 0x1000>; > + reg-names = "port0"; > #address-cells = <3>; > #size-cells = <2>; > - interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>, > - <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>; > + interrupts = <GIC_SPI 228 IRQ_TYPE_LEVEL_LOW>; > + interrupt-names = "pcie_irq"; > clocks = <&pciesys CLK_PCIE_P0_MAC_EN>, > - <&pciesys CLK_PCIE_P1_MAC_EN>, > <&pciesys CLK_PCIE_P0_AHB_EN>, > - <&pciesys CLK_PCIE_P1_AHB_EN>, > <&pciesys CLK_PCIE_P0_AUX_EN>, > - <&pciesys CLK_PCIE_P1_AUX_EN>, > <&pciesys CLK_PCIE_P0_AXI_EN>, > - <&pciesys CLK_PCIE_P1_AXI_EN>, > <&pciesys CLK_PCIE_P0_OBFF_EN>, > - <&pciesys CLK_PCIE_P1_OBFF_EN>, > - <&pciesys CLK_PCIE_P0_PIPE_EN>, > - <&pciesys CLK_PCIE_P1_PIPE_EN>; > - clock-names = "sys_ck0", "sys_ck1", "ahb_ck0", "ahb_ck1", > - "aux_ck0", "aux_ck1", "axi_ck0", "axi_ck1", > - "obff_ck0", "obff_ck1", "pipe_ck0", "pipe_ck1"; > - phys = <&pcie0_phy PHY_TYPE_PCIE>, <&pcie1_phy PHY_TYPE_PCIE>; > - phy-names = "pcie-phy0", "pcie-phy1"; > + <&pciesys CLK_PCIE_P0_PIPE_EN>; > + clock-names = "sys_ck0", "ahb_ck0", "aux_ck0", > + "axi_ck0", "obff_ck0", "pipe_ck0"; > + > power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>; > bus-range = <0x00 0xff>; > - ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x10000000>; > + ranges = <0x82000000 0 0x20000000 0x0 0x20000000 0 0x8000000>; > + status = "disabled"; > > - pcie0: pcie@0,0 { > + slot0: pcie@0,0 { > reg = <0x0000 0 0 0 0>; > #address-cells = <3>; > #size-cells = <2>; > @@ -251,8 +259,33 @@ Examples for MT7622: > #interrupt-cells = <1>; > }; > }; > + }; > + > + pcie1: pcie@1a145000 { > + compatible = "mediatek,mt7622-pcie"; > + device_type = "pci"; > + reg = <0 0x1a145000 0 0x1000>; > + reg-names = "port1"; > + #address-cells = <3>; > + #size-cells = <2>; > + interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>; > + interrupt-names = "pcie_irq"; > + clocks = <&pciesys CLK_PCIE_P1_MAC_EN>, > + /* designer has connect RC1 with p0_ahb clock */ > + <&pciesys CLK_PCIE_P0_AHB_EN>, > + <&pciesys CLK_PCIE_P1_AUX_EN>, > + <&pciesys CLK_PCIE_P1_AXI_EN>, > + <&pciesys CLK_PCIE_P1_OBFF_EN>, > + <&pciesys CLK_PCIE_P1_PIPE_EN>; > + clock-names = "sys_ck1", "ahb_ck1", "aux_ck1", > + "axi_ck1", "obff_ck1", "pipe_ck1"; > + > + power-domains = <&scpsys MT7622_POWER_DOMAIN_HIF0>; > + bus-range = <0x00 0xff>; > + ranges = <0x82000000 0 0x28000000 0x0 0x28000000 0 0x8000000>; > + status = "disabled"; > > - pcie1: pcie@1,0 { > + slot1: pcie@1,0 { > reg = <0x0800 0 0 0 0>; > #address-cells = <3>; > #size-cells = <2>; > -- > 2.18.0
