dt-bindings: serial: lantiq: Convert to YAML & add support for new SoC
Subsystems (2)
v2 cover dt-bindings: serial: lantiq: Convert to YAML & add support for new SoC
There is a new product which reuses Lantiq serial controller IP. Patch 1 in this series converts existing lantiq dt bindings to YAML schema and Patch 2 updates it to support newer product.
These patches are baselined upon Linux 5.3-rc4 at below Git tree:git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
v2:
* Update license to GPL-2.0-only.
* Fix trailing whitespace error.
Rahul Tanwar (2):
dt-bindings: serial: lantiq: Convert to YAML schema
dt-bindings: lantiq: Update for new SoC
.../devicetree/bindings/serial/lantiq_asc.txt | 31 -------- .../devicetree/bindings/serial/lantiq_asc.yaml | 87 ++++++++++++++++++++++ 2 files changed, 87 insertions(+), 31 deletions(-) delete mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.txt create mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.yaml
Signature · 1 line
2.11.0
PATCH v2 1/2 dt-bindings: serial: lantiq: Convert to YAML schema
Convert the existing DT binding document for Lantiq SoC ASC serial controller from txt format to YAML format.
--- .../devicetree/bindings/serial/lantiq_asc.txt | 31 ---------- .../devicetree/bindings/serial/lantiq_asc.yaml | 70 ++++++++++++++++++++++ 2 files changed, 70 insertions(+), 31 deletions(-) delete mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.txt create mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.yaml
Documentation/devicetree/bindings/serial/lantiq_asc.txt deleted +0 -31
@@ -1,31 +0,0 @@ -Lantiq SoC ASC serial controller - -Required properties: -- compatible : Should be "lantiq,asc" -- reg : Address and length of the register set for the device -- interrupts: the 3 (tx rx err) interrupt numbers. The interrupt specifier - depends on the interrupt-parent interrupt controller. - -Optional properties: -- clocks: Should contain frequency clock and gate clock -- clock-names: Should be "freq" and "asc" - -Example: - -asc0: serial@16600000 { - compatible = "lantiq,asc"; - reg = <0x16600000 0x100000>; - interrupt-parent = <&gic>; - interrupts = <GIC_SHARED 103 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SHARED 105 IRQ_TYPE_LEVEL_HIGH>, - <GIC_SHARED 106 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&cgu CLK_SSX4>, <&cgu GCLK_UART>; - clock-names = "freq", "asc"; -}; - -asc1: serial@e100c00 { - compatible = "lantiq,asc"; - reg = <0xE100C00 0x400>; - interrupt-parent = <&icu0>; - interrupts = <112 113 114>; -};
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +70 -0
70 lines not on this page · raw message
Signature · 1 line
2.11.0
Re: [PATCH v2 1/2] dt-bindings: serial: lantiq: Convert to YAML schema
Quoted 8 lines · Rahul Tanwar
Convert the existing DT binding document for Lantiq SoC ASC serial controller from txt format to YAML format.
Signed-off-by Rahul Tanwar <[email protected]>--- .../devicetree/bindings/serial/lantiq_asc.txt | 31 ---------- .../devicetree/bindings/serial/lantiq_asc.yaml | 70 ++++++++++++++++++++++
Use the compatible name: lantiq,asc.yaml
Don't forget the $id value too.
Quoted 26 lines
2 files changed, 70 insertions(+), 31 deletions(-) delete mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.txt create mode 100644 Documentation/devicetree/bindings/serial/lantiq_asc.yamlDocumentation/devicetree/bindings/serial/lantiq_asc.yaml new file +15
-0@@ -0,0 +1,70 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serial/lantiq_asc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Lantiq SoC ASC serial controller + +maintainers: + - Rahul Tanwar <[email protected]> + +allOf: + - $ref: /schemas/serial.yaml# + +properties:
Documentation/devicetree/bindings/serial/lantiq_asc.yaml line 25
Quoted 10 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +10
-0+ compatible: + oneOf: + items: + - const: lantiq,asc + + reg: + maxItems: 1 + + interrupts: + minItems: 1
Technically, 1 item is not allowed until patch 2 (or the old doc was wrong).
Documentation/devicetree/bindings/serial/lantiq_asc.yaml line 36
Quoted 11 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +11
-0+ maxItems: 3 + items: + - description: tx or combined interrupt + - description: rx interrupt + - description: err interrupt + + clocks: + description: + When present, first entry listed should contain phandle + to the frequency clock and second entry should contain + phandle to the gate clock.
Schema needs to define how many entries:
items:
- description: ...
- description: ...
Quoted 17 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +17
-0+ + clock-names: + items: + - const: freq + - const: asc + +required: + - compatible + - reg + - interrupts + + +examples: + - | + asc0: serial@16600000 { + compatible = "lantiq,asc"; + reg = <0x16600000 0x100000>;
Documentation/devicetree/bindings/serial/lantiq_asc.yaml line 63
Quoted 10 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +10
-0+ interrupt-parent = <&gic>; + interrupts = <GIC_SHARED 103 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SHARED 105 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SHARED 106 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cgu CLK_SSX4>, <&cgu GCLK_UART>; + clock-names = "freq", "asc"; + }; + + - | + asc1: serial@e100c00 {
I don't think this 2nd example adds anything.
Quoted 10 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml new file +7
-1+ compatible = "lantiq,asc"; + reg = <0xE100C00 0x400>; + interrupt-parent = <&icu0>; + interrupts = <112 113 114>; + }; + +... --2.11.0
PATCH v2 2/2 dt-bindings: lantiq: Update for new SoC
In reply to Rahul TanwarIntel Lightning Mountain(LGM) SoC reuses Lantiq ASC serial controller IP. Update the dt bindings to support LGM as well.
--- .../devicetree/bindings/serial/lantiq_asc.yaml | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
Documentation/devicetree/bindings/serial/lantiq_asc.yaml +17 -0
@@ -17,6 +17,7 @@ properties: oneOf: items: - const: lantiq,asc + - const: intel,lgm-asc reg: maxItems: 1
@@ -28,6 +29,12 @@ properties: - description: tx or combined interrupt - description: rx interrupt - description: err interrupt + description: + For lantiq,asc compatible, it supports 3 separate + interrupts for tx rx & err. Whereas, for intel,lgm-asc + compatible, it supports combined single interrupt for + all of tx, rx & err interrupts. + clocks: description:
@@ -67,4 +74,14 @@ examples: interrupts = <112 113 114>; }; + - | + asc0: serial@e0a00000 { + compatible = "intel,lgm-asc"; + reg = <0xe0a00000 0x1000>; + interrupt-parent = <&ioapic1>; + interrupts = <128 1>; + clocks = <&cgu0 LGM_CLK_NOC4>, <&cgu0 LGM_GCLK_ASC0>; + clock-names = "freq", "asc"; + }; + ...
Signature · 1 line
2.11.0
Re: [PATCH v2 2/2] dt-bindings: lantiq: Update for new SoC
Quoted 14 lines · Rahul Tanwar
Intel Lightning Mountain(LGM) SoC reuses Lantiq ASC serial controller IP. Update the dt bindings to support LGM as well.
Signed-off-by Rahul Tanwar <[email protected]>--- .../devicetree/bindings/serial/lantiq_asc.yaml | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)Documentation/devicetree/bindings/serial/lantiq_asc.yaml +0
-0
Documentation/devicetree/bindings/serial/lantiq_asc.yaml properties: · line 20
Quoted 4 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml +1
-0@@ -17,6 +17,7 @@ properties: oneOf: items: - const: lantiq,asc + - const: intel,lgm-asc
Better expressed as:
compatible:
enum:
- intel,lgm-asc
- lantiq,asc
Documentation/devicetree/bindings/serial/lantiq_asc.yaml properties: · line 36
Quoted 12 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml +5
-0reg: maxItems: 1@@ -28,6 +29,12 @@ properties: - description: tx or combined interrupt - description: rx interrupt - description: err interrupt + description: + For lantiq,asc compatible, it supports 3 separate + interrupts for tx rx & err. Whereas, for intel,lgm-asc + compatible, it supports combined single interrupt for + all of tx, rx & err interrupts.
This can be expressed with an if/then schema. There's some examples in the tree how to do that.
Quoted 22 lines
Documentation/devicetree/bindings/serial/lantiq_asc.yaml +11
-1+ clocks: description:@@ -67,4 +74,14 @@ examples: interrupts = <112 113 114>; }; + - | + asc0: serial@e0a00000 { + compatible = "intel,lgm-asc"; + reg = <0xe0a00000 0x1000>; + interrupt-parent = <&ioapic1>; + interrupts = <128 1>; + clocks = <&cgu0 LGM_CLK_NOC4>, <&cgu0 LGM_GCLK_ASC0>; + clock-names = "freq", "asc"; + }; + --2.11.0