[PATCH v4 2/5] dt-bindings: PCI: dwc: rockchip: Fix interrupt-names issue
From: Sebastian Reichel <hidden>
Date: 2023-07-31 16:57:44
Also in:
linux-devicetree, linux-pci, linux-rockchip, lkml
Subsystem:
open firmware and flattened device tree bindings, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
The RK356x (and RK3588) have 5 ganged interrupts. For example the "legacy" interrupt combines "inta/intb/intc/intd" with a register providing the details, which specific interrupt triggered. The interrupts from the second level are part of the Synopsys DW PCIe System Information Interface (SII). Some of them are listed in the Interrupt Signals section, the others are mostly common SII output signals. The grouping and the ganged interrupt controllers are specific to the Rockchip implementation. Currently the binding is not specifying these interrupts resulting in a bunch of errors for all rk356x/rk3588 boards using PCIe. Fix this by specifying the interrupts and add them to the example to prevent regressions. This changes the reference from snps,dw-pcie.yaml to snps,dw-pcie-common.yaml, since the interrupts are vendor specific and should not be listed in the generic file. The only other bit from the generic binding are the reg-names, which are overwritten by this binding. Signed-off-by: Sebastian Reichel <redacted> --- .../bindings/pci/rockchip-dw-pcie.yaml | 43 ++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
index a4f61ced5e88..7836b9a5547c 100644
--- a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml@@ -17,7 +17,8 @@ description: |+ snps,dw-pcie.yaml. allOf: - - $ref: /schemas/pci/snps,dw-pcie.yaml# + - $ref: /schemas/pci/pci-bus.yaml# + - $ref: /schemas/pci/snps,dw-pcie-common.yaml# properties: compatible:
@@ -60,6 +61,39 @@ properties: - const: aux - const: pipe + interrupts: + items: + - description: + Combined system interrupt, which is used to signal the following + interrupts - phy_link_up, dll_link_up, link_req_rst_not, hp_pme, + hp, hp_msi, link_auto_bw, link_auto_bw_msi, bw_mgt, bw_mgt_msi, + edma_wr, edma_rd, dpa_sub_upd, rbar_update, link_eq_req, ep_elbi_app + - description: + Combined PM interrupt, which is used to signal the following + interrupts - linkst_in_l1sub, linkst_in_l1, linkst_in_l2, + linkst_in_l0s, linkst_out_l1sub, linkst_out_l1, linkst_out_l2, + linkst_out_l0s, pm_dstate_update + - description: + Combined message interrupt, which is used to signal the following + interrupts - ven_msg, unlock_msg, ltr_msg, cfg_pme, cfg_pme_msi, + pm_pme, pm_to_ack, pm_turnoff, obff_idle, obff_obff, obff_cpu_active + - description: + Combined legacy interrupt, which is used to signal the following + interrupts - inta, intb, intc, intd + - description: + Combined error interrupt, which is used to signal the following + interrupts - aer_rc_err, aer_rc_err_msi, rx_cpl_timeout, + tx_cpl_timeout, cor_err_sent, nf_err_sent, f_err_sent, cor_err_rx, + nf_err_rx, f_err_rx, radm_qoverflow + + interrupt-names: + items: + - const: sys + - const: pmc + - const: msg + - const: legacy + - const: err + msi-map: true num-lanes: true
@@ -108,6 +142,7 @@ unevaluatedProperties: false examples: - | + #include <dt-bindings/interrupt-controller/arm-gic.h> bus { #address-cells = <2>;
@@ -127,6 +162,12 @@ examples: "aclk_dbi", "pclk", "aux"; device_type = "pci"; + interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "sys", "pmc", "msg", "legacy", "err"; linux,pci-domain = <2>; max-link-speed = <2>; msi-map = <0x2000 &its 0x2000 0x1000>;
--
2.40.1
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