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Message-Id: <20210503185228.1518131-1-clabbe@baylibre.com>
Date: Mon, 3 May 2021 18:52:27 +0000
From: Corentin Labbe <clabbe@...libre.com>
To: bhelgaas@...gle.com, linus.walleij@...aro.org, robh+dt@...nel.org,
ulli.kroll@...glemail.com
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
Corentin Labbe <clabbe@...libre.com>
Subject: [PATCH 1/2] dt-bindings: pci: convert faraday,ftpci100 to yaml
Converts pci/faraday,ftpci100.txt to yaml.
Some change are also made:
- example has wrong interrupts place
Signed-off-by: Corentin Labbe <clabbe@...libre.com>
---
.../bindings/pci/faraday,ftpci100.txt | 135 -----------
.../bindings/pci/faraday,ftpci100.yaml | 211 ++++++++++++++++++
2 files changed, 211 insertions(+), 135 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pci/faraday,ftpci100.txt
create mode 100644 Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml
diff --git a/Documentation/devicetree/bindings/pci/faraday,ftpci100.txt b/Documentation/devicetree/bindings/pci/faraday,ftpci100.txt
deleted file mode 100644
index 5f8cb4962f8d..000000000000
--- a/Documentation/devicetree/bindings/pci/faraday,ftpci100.txt
+++ /dev/null
@@ -1,135 +0,0 @@
-Faraday Technology FTPCI100 PCI Host Bridge
-
-This PCI bridge is found inside that Cortina Systems Gemini SoC platform and
-is a generic IP block from Faraday Technology. It exists in two variants:
-plain and dual PCI. The plain version embeds a cascading interrupt controller
-into the host bridge. The dual version routes the interrupts to the host
-chips interrupt controller.
-
-The host controller appear on the PCI bus with vendor ID 0x159b (Faraday
-Technology) and product ID 0x4321.
-
-Mandatory properties:
-
-- compatible: ranging from specific to generic, should be one of
- "cortina,gemini-pci", "faraday,ftpci100"
- "cortina,gemini-pci-dual", "faraday,ftpci100-dual"
- "faraday,ftpci100"
- "faraday,ftpci100-dual"
-- reg: memory base and size for the host bridge
-- #address-cells: set to <3>
-- #size-cells: set to <2>
-- #interrupt-cells: set to <1>
-- bus-range: set to <0x00 0xff>
-- device_type, set to "pci"
-- ranges: see pci.txt
-- interrupt-map-mask: see pci.txt
-- interrupt-map: see pci.txt
-- dma-ranges: three ranges for the inbound memory region. The ranges must
- be aligned to a 1MB boundary, and may be 1MB, 2MB, 4MB, 8MB, 16MB, 32MB, 64MB,
- 128MB, 256MB, 512MB, 1GB or 2GB in size. The memory should be marked as
- pre-fetchable.
-
-Optional properties:
-- clocks: when present, this should contain the peripheral clock (PCLK) and the
- PCI clock (PCICLK). If these are not present, they are assumed to be
- hard-wired enabled and always on. The PCI clock will be 33 or 66 MHz.
-- clock-names: when present, this should contain "PCLK" for the peripheral
- clock and "PCICLK" for the PCI-side clock.
-
-Mandatory subnodes:
-- For "faraday,ftpci100" a node representing the interrupt-controller inside the
- host bridge is mandatory. It has the following mandatory properties:
- - interrupt: see interrupt-controller/interrupts.txt
- - interrupt-controller: see interrupt-controller/interrupts.txt
- - #address-cells: set to <0>
- - #interrupt-cells: set to <1>
-
-I/O space considerations:
-
-The plain variant has 128MiB of non-prefetchable memory space, whereas the
-"dual" variant has 64MiB. Take this into account when describing the ranges.
-
-Interrupt map considerations:
-
-The "dual" variant will get INT A, B, C, D from the system interrupt controller
-and should point to respective interrupt in that controller in its
-interrupt-map.
-
-The code which is the only documentation of how the Faraday PCI (the non-dual
-variant) interrupts assigns the default interrupt mapping/swizzling has
-typically been like this, doing the swizzling on the interrupt controller side
-rather than in the interconnect:
-
-interrupt-map-mask = <0xf800 0 0 7>;
-interrupt-map =
- <0x4800 0 0 1 &pci_intc 0>, /* Slot 9 */
- <0x4800 0 0 2 &pci_intc 1>,
- <0x4800 0 0 3 &pci_intc 2>,
- <0x4800 0 0 4 &pci_intc 3>,
- <0x5000 0 0 1 &pci_intc 1>, /* Slot 10 */
- <0x5000 0 0 2 &pci_intc 2>,
- <0x5000 0 0 3 &pci_intc 3>,
- <0x5000 0 0 4 &pci_intc 0>,
- <0x5800 0 0 1 &pci_intc 2>, /* Slot 11 */
- <0x5800 0 0 2 &pci_intc 3>,
- <0x5800 0 0 3 &pci_intc 0>,
- <0x5800 0 0 4 &pci_intc 1>,
- <0x6000 0 0 1 &pci_intc 3>, /* Slot 12 */
- <0x6000 0 0 2 &pci_intc 0>,
- <0x6000 0 0 3 &pci_intc 1>,
- <0x6000 0 0 4 &pci_intc 2>;
-
-Example:
-
-pci@...00000 {
- compatible = "cortina,gemini-pci", "faraday,ftpci100";
- reg = <0x50000000 0x100>;
- interrupts = <8 IRQ_TYPE_LEVEL_HIGH>, /* PCI A */
- <26 IRQ_TYPE_LEVEL_HIGH>, /* PCI B */
- <27 IRQ_TYPE_LEVEL_HIGH>, /* PCI C */
- <28 IRQ_TYPE_LEVEL_HIGH>; /* PCI D */
- #address-cells = <3>;
- #size-cells = <2>;
- #interrupt-cells = <1>;
-
- bus-range = <0x00 0xff>;
- ranges = /* 1MiB I/O space 0x50000000-0x500fffff */
- <0x01000000 0 0 0x50000000 0 0x00100000>,
- /* 128MiB non-prefetchable memory 0x58000000-0x5fffffff */
- <0x02000000 0 0x58000000 0x58000000 0 0x08000000>;
-
- /* DMA ranges */
- dma-ranges =
- /* 128MiB at 0x00000000-0x07ffffff */
- <0x02000000 0 0x00000000 0x00000000 0 0x08000000>,
- /* 64MiB at 0x00000000-0x03ffffff */
- <0x02000000 0 0x00000000 0x00000000 0 0x04000000>,
- /* 64MiB at 0x00000000-0x03ffffff */
- <0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
-
- interrupt-map-mask = <0xf800 0 0 7>;
- interrupt-map =
- <0x4800 0 0 1 &pci_intc 0>, /* Slot 9 */
- <0x4800 0 0 2 &pci_intc 1>,
- <0x4800 0 0 3 &pci_intc 2>,
- <0x4800 0 0 4 &pci_intc 3>,
- <0x5000 0 0 1 &pci_intc 1>, /* Slot 10 */
- <0x5000 0 0 2 &pci_intc 2>,
- <0x5000 0 0 3 &pci_intc 3>,
- <0x5000 0 0 4 &pci_intc 0>,
- <0x5800 0 0 1 &pci_intc 2>, /* Slot 11 */
- <0x5800 0 0 2 &pci_intc 3>,
- <0x5800 0 0 3 &pci_intc 0>,
- <0x5800 0 0 4 &pci_intc 1>,
- <0x6000 0 0 1 &pci_intc 3>, /* Slot 12 */
- <0x6000 0 0 2 &pci_intc 0>,
- <0x6000 0 0 3 &pci_intc 0>,
- <0x6000 0 0 4 &pci_intc 0>;
- pci_intc: interrupt-controller {
- interrupt-parent = <&intcon>;
- interrupt-controller;
- #address-cells = <0>;
- #interrupt-cells = <1>;
- };
-};
diff --git a/Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml b/Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml
new file mode 100644
index 000000000000..9be27e71526c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/faraday,ftpci100.yaml
@@ -0,0 +1,211 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/faraday,ftpci100.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Faraday Technology FTPCI100 PCI Host Bridge
+
+maintainers:
+ - Linus Walleij <linus.walleij@...aro.org>
+
+description: |
+ This PCI bridge is found inside that Cortina Systems Gemini SoC platform and
+ is a generic IP block from Faraday Technology. It exists in two variants:
+ plain and dual PCI. The plain version embeds a cascading interrupt controller
+ into the host bridge. The dual version routes the interrupts to the host
+ chips interrupt controller.
+ The host controller appear on the PCI bus with vendor ID 0x159b (Faraday
+ Technology) and product ID 0x4321.
+
+allOf:
+ - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - const: "cortina,gemini-pci"
+ - const: "faraday,ftpci100"
+ - items:
+ - const: "cortina,gemini-pci-dual"
+ - const: "faraday,ftpci100-dual"
+ - const: "faraday,ftpci100"
+ - const: "faraday,ftpci100-dual"
+
+ reg:
+ minItems: 1
+
+ "#address-cells":
+ const: 3
+
+ "#size-cells":
+ const: 2
+
+ "#interrupt-cells":
+ const: 1
+
+ bus-range:
+ items:
+ - const: 0x00
+ - const: 0xff
+
+ ranges:
+ minItems: 2
+ description: see pci.txt
+
+ dma-ranges:
+ minItems: 3
+ description: |
+ three ranges for the inbound memory region. The ranges must
+ be aligned to a 1MB boundary, and may be 1MB, 2MB, 4MB, 8MB, 16MB, 32MB, 64MB,
+ 128MB, 256MB, 512MB, 1GB or 2GB in size. The memory should be marked as
+ pre-fetchable.
+
+ clocks:
+ minItems: 2
+ description: |
+ when present, this should contain the peripheral clock (PCLK) and the
+ PCI clock (PCICLK). If these are not present, they are assumed to be
+ hard-wired enabled and always on. The PCI clock will be 33 or 66 MHz.
+
+ clock-names:
+ items:
+ - const: "PCLK"
+ - const: "PCICLK"
+
+ interrupt-controller:
+ allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+ type: object
+ properties:
+ interrupts:
+ minItems: 1
+
+ interrupt-controller: true
+
+ "#address-cells":
+ const: 0
+
+ "#interrupt-cells":
+ const: 1
+
+ required:
+ - interrupts
+ - interrupt-controller
+ - "#address-cells"
+ - "#interrupt-cells"
+
+required:
+ - reg
+ - compatible
+ - "#address-cells"
+ - "#size-cells"
+ - "#interrupt-cells"
+ - bus-range
+ - ranges
+ - interrupt-map-mask
+ - interrupt-map
+ - dma-ranges
+
+if:
+ properties:
+ compatible:
+ contains:
+ items:
+ - const: cortina,gemini-pci
+ - const: faraday,ftpci100
+then:
+ required:
+ - interrupt-controller
+
+unevaluatedProperties: false
+
+#I/O space considerations:
+
+#The plain variant has 128MiB of non-prefetchable memory space, whereas the
+#"dual" variant has 64MiB. Take this into account when describing the ranges.
+
+#Interrupt map considerations:
+
+#The "dual" variant will get INT A, B, C, D from the system interrupt controller
+#and should point to respective interrupt in that controller in its
+#interrupt-map.
+
+#The code which is the only documentation of how the Faraday PCI (the non-dual
+#variant) interrupts assigns the default interrupt mapping/swizzling has
+#typically been like this, doing the swizzling on the interrupt controller side
+#rather than in the interconnect:
+
+#interrupt-map-mask = <0xf800 0 0 7>;
+#interrupt-map =
+# <0x4800 0 0 1 &pci_intc 0>, /* Slot 9 */
+# <0x4800 0 0 2 &pci_intc 1>,
+# <0x4800 0 0 3 &pci_intc 2>,
+# <0x4800 0 0 4 &pci_intc 3>,
+# <0x5000 0 0 1 &pci_intc 1>, /* Slot 10 */
+# <0x5000 0 0 2 &pci_intc 2>,
+# <0x5000 0 0 3 &pci_intc 3>,
+# <0x5000 0 0 4 &pci_intc 0>,
+# <0x5800 0 0 1 &pci_intc 2>, /* Slot 11 */
+# <0x5800 0 0 2 &pci_intc 3>,
+# <0x5800 0 0 3 &pci_intc 0>,
+# <0x5800 0 0 4 &pci_intc 1>,
+# <0x6000 0 0 1 &pci_intc 3>, /* Slot 12 */
+# <0x6000 0 0 2 &pci_intc 0>,
+# <0x6000 0 0 3 &pci_intc 1>,
+# <0x6000 0 0 4 &pci_intc 2>;
+
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ pci@...00000 {
+ compatible = "cortina,gemini-pci", "faraday,ftpci100";
+ reg = <0x50000000 0x100>;
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ #interrupt-cells = <1>;
+
+ bus-range = <0x00 0xff>;
+ ranges = /* 1MiB I/O space 0x50000000-0x500fffff */
+ <0x01000000 0 0 0x50000000 0 0x00100000>,
+ /* 128MiB non-prefetchable memory 0x58000000-0x5fffffff */
+ <0x02000000 0 0x58000000 0x58000000 0 0x08000000>;
+
+ /* DMA ranges */
+ dma-ranges =
+ /* 128MiB at 0x00000000-0x07ffffff */
+ <0x02000000 0 0x00000000 0x00000000 0 0x08000000>,
+ /* 64MiB at 0x00000000-0x03ffffff */
+ <0x02000000 0 0x00000000 0x00000000 0 0x04000000>,
+ /* 64MiB at 0x00000000-0x03ffffff */
+ <0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
+
+ interrupt-map-mask = <0xf800 0 0 7>;
+ interrupt-map =
+ <0x4800 0 0 1 &pci_intc 0>, /* Slot 9 */
+ <0x4800 0 0 2 &pci_intc 1>,
+ <0x4800 0 0 3 &pci_intc 2>,
+ <0x4800 0 0 4 &pci_intc 3>,
+ <0x5000 0 0 1 &pci_intc 1>, /* Slot 10 */
+ <0x5000 0 0 2 &pci_intc 2>,
+ <0x5000 0 0 3 &pci_intc 3>,
+ <0x5000 0 0 4 &pci_intc 0>,
+ <0x5800 0 0 1 &pci_intc 2>, /* Slot 11 */
+ <0x5800 0 0 2 &pci_intc 3>,
+ <0x5800 0 0 3 &pci_intc 0>,
+ <0x5800 0 0 4 &pci_intc 1>,
+ <0x6000 0 0 1 &pci_intc 3>, /* Slot 12 */
+ <0x6000 0 0 2 &pci_intc 0>,
+ <0x6000 0 0 3 &pci_intc 0>,
+ <0x6000 0 0 4 &pci_intc 0>;
+ pci_intc: interrupt-controller {
+ interrupt-parent = <&intcon>;
+ interrupt-controller;
+ interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <0>;
+ #interrupt-cells = <1>;
+ };
+ };
--
2.26.3
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