spi: Convert the Aspeed SMC controllers device tree binding
The "interrupt" property is optional because it is only necessary for controllers supporting DMAs (Not implemented yet in the new driver). Cc: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com> Tested-by: Joel Stanley <joel@jms.id.au> Tested-by: Tao Ren <rentao.bupt@gmail.com> Tested-by: Jae Hyun Yoo <quic_jaehyoo@quicinc.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Cédric Le Goater <clg@kaod.org> Link: https://lore.kernel.org/r/20220509175616.1089346-3-clg@kaod.org Signed-off-by: Mark Brown <broonie@kernel.org>
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Cédric Le Goater
Mark Brown
parent
22d35e4041
commit
ce9858ea49
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@ -1,51 +0,0 @@
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* Aspeed Firmware Memory controller
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* Aspeed SPI Flash Memory Controller
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The Firmware Memory Controller in the Aspeed AST2500 SoC supports
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three chip selects, two of which are always of SPI type and the third
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can be SPI or NOR type flash. These bindings only describe SPI.
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The two SPI flash memory controllers in the AST2500 each support two
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chip selects.
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Required properties:
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- compatible : Should be one of
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"aspeed,ast2400-fmc" for the AST2400 Firmware Memory Controller
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"aspeed,ast2400-spi" for the AST2400 SPI Flash memory Controller
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"aspeed,ast2500-fmc" for the AST2500 Firmware Memory Controller
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"aspeed,ast2500-spi" for the AST2500 SPI flash memory controllers
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- reg : the first contains the control register location and length,
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the second contains the memory window mapping address and length
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- #address-cells : must be 1 corresponding to chip select child binding
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- #size-cells : must be 0 corresponding to chip select child binding
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Optional properties:
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- interrupts : Should contain the interrupt for the dma device if an
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FMC
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The child nodes are the SPI flash modules which must have a compatible
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property as specified in bindings/mtd/jedec,spi-nor.txt
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Optionally, the child node can contain properties for SPI mode (may be
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ignored):
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- spi-max-frequency - max frequency of spi bus
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Example:
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fmc: fmc@1e620000 {
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compatible = "aspeed,ast2500-fmc";
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reg = < 0x1e620000 0x94
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0x20000000 0x02000000 >;
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#address-cells = <1>;
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#size-cells = <0>;
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interrupts = <19>;
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flash@0 {
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reg = < 0 >;
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compatible = "jedec,spi-nor";
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/* spi-max-frequency = <>; */
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/* m25p,fast-read; */
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#address-cells = <1>;
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#size-cells = <1>;
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};
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};
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@ -0,0 +1,82 @@
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/spi/aspeed,ast2600-fmc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Aspeed SMC controllers bindings
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maintainers:
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- Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
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- Cédric Le Goater <clg@kaod.org>
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description: |
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This binding describes the Aspeed Static Memory Controllers (FMC and
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SPI) of the AST2400, AST2500 and AST2600 SOCs.
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allOf:
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- $ref: "spi-controller.yaml#"
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properties:
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compatible:
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enum:
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- aspeed,ast2600-fmc
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- aspeed,ast2600-spi
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- aspeed,ast2500-fmc
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- aspeed,ast2500-spi
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- aspeed,ast2400-fmc
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- aspeed,ast2400-spi
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reg:
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items:
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- description: registers
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- description: memory mapping
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clocks:
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maxItems: 1
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interrupts:
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maxItems: 1
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required:
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- compatible
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- reg
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- clocks
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
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#include <dt-bindings/clock/ast2600-clock.h>
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spi@1e620000 {
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reg = <0x1e620000 0xc4>, <0x20000000 0x10000000>;
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "aspeed,ast2600-fmc";
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clocks = <&syscon ASPEED_CLK_AHB>;
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interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
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flash@0 {
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reg = < 0 >;
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compatible = "jedec,spi-nor";
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spi-max-frequency = <50000000>;
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spi-rx-bus-width = <2>;
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};
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flash@1 {
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reg = < 1 >;
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compatible = "jedec,spi-nor";
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spi-max-frequency = <50000000>;
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spi-rx-bus-width = <2>;
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};
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flash@2 {
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reg = < 2 >;
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compatible = "jedec,spi-nor";
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spi-max-frequency = <50000000>;
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spi-rx-bus-width = <2>;
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};
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};
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@ -3099,6 +3099,15 @@ S: Maintained
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F: Documentation/devicetree/bindings/mmc/aspeed,sdhci.yaml
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F: drivers/mmc/host/sdhci-of-aspeed*
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ASPEED SMC SPI DRIVER
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M: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
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M: Cédric Le Goater <clg@kaod.org>
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L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
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L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
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L: linux-spi@vger.kernel.org
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S: Maintained
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F: Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml
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ASPEED VIDEO ENGINE DRIVER
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M: Eddie James <eajames@linux.ibm.com>
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L: linux-media@vger.kernel.org
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