diff options
Diffstat (limited to 'Documentation/devicetree/bindings/mtd')
6 files changed, 70 insertions, 45 deletions
diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml index 787ef488dd5b..57b6957c8415 100644 --- a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.yaml @@ -50,7 +50,7 @@ patternProperties: const: hw nand-ecc-step-size: - const: 1024 + enum: [512, 1024] nand-ecc-strength: enum: [8, 16, 24, 30, 40, 50, 60] @@ -66,6 +66,10 @@ patternProperties: unevaluatedProperties: false + dependencies: + nand-ecc-strength: [nand-ecc-step-size] + nand-ecc-step-size: [nand-ecc-strength] + required: - compatible diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml index 89959e5c47ba..58f0cea160ef 100644 --- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml +++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml @@ -43,8 +43,10 @@ properties: - const: jedec,spi-nor - const: jedec,spi-nor description: - Must also include "jedec,spi-nor" for any SPI NOR flash that can be - identified by the JEDEC READ ID opcode (0x9F). + SPI NOR flashes compatible with the JEDEC SFDP standard or which may be + identified with the READ ID opcode (0x9F) do not deserve a specific + compatible. They should instead only be matched against the generic + "jedec,spi-nor" compatible. reg: minItems: 1 @@ -70,6 +72,21 @@ properties: be used on such systems, to denote the absence of a reliable reset mechanism. + no-wp: + type: boolean + description: + The status register write disable (SRWD) bit in status register, combined + with the WP# signal, provides hardware data protection for the device. When + the SRWD bit is set to 1, and the WP# signal is either driven LOW or hard + strapped to LOW, the status register nonvolatile bits become read-only and + the WRITE STATUS REGISTER operation will not execute. The only way to exit + this hardware-protected mode is to drive WP# HIGH. If the WP# signal of the + flash device is not connected or is wrongly tied to GND (that includes internal + pull-downs) then status register permanently becomes read-only as the SRWD bit + cannot be reset. This boolean flag can be used on such systems to avoid setting + the SRWD bit while writing the status register. WP# signal hard strapped to GND + can be a valid use case. + reset-gpios: description: A GPIO line connected to the RESET (active low) signal of the device. diff --git a/Documentation/devicetree/bindings/mtd/marvell,nand-controller.yaml b/Documentation/devicetree/bindings/mtd/marvell,nand-controller.yaml index a10729bb1840..1ecea848e8b9 100644 --- a/Documentation/devicetree/bindings/mtd/marvell,nand-controller.yaml +++ b/Documentation/devicetree/bindings/mtd/marvell,nand-controller.yaml @@ -16,6 +16,7 @@ properties: - const: marvell,armada-8k-nand-controller - const: marvell,armada370-nand-controller - enum: + - marvell,ac5-nand-controller - marvell,armada370-nand-controller - marvell,pxa3xx-nand-controller - description: legacy bindings diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml index 83a4fe4cc29d..28167c0cf271 100644 --- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml +++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml @@ -1,4 +1,4 @@ -# SPDX-License-Identifier: GPL-2.0 +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/mtd/nand-controller.yaml# diff --git a/Documentation/devicetree/bindings/mtd/oxnas-nand.txt b/Documentation/devicetree/bindings/mtd/oxnas-nand.txt deleted file mode 100644 index 2ba07fc8b79c..000000000000 --- a/Documentation/devicetree/bindings/mtd/oxnas-nand.txt +++ /dev/null @@ -1,41 +0,0 @@ -* Oxford Semiconductor OXNAS NAND Controller - -Please refer to nand-controller.yaml for generic information regarding MTD NAND bindings. - -Required properties: - - compatible: "oxsemi,ox820-nand" - - reg: Base address and length for NAND mapped memory. - -Optional Properties: - - clocks: phandle to the NAND gate clock if needed. - - resets: phandle to the NAND reset control if needed. - -Example: - -nandc: nand-controller@41000000 { - compatible = "oxsemi,ox820-nand"; - reg = <0x41000000 0x100000>; - clocks = <&stdclk CLK_820_NAND>; - resets = <&reset RESET_NAND>; - #address-cells = <1>; - #size-cells = <0>; - - nand@0 { - reg = <0>; - #address-cells = <1>; - #size-cells = <1>; - nand-ecc-mode = "soft"; - nand-ecc-algo = "hamming"; - - partition@0 { - label = "boot"; - reg = <0x00000000 0x00e00000>; - read-only; - }; - - partition@e00000 { - label = "ubi"; - reg = <0x00e00000 0x07200000>; - }; - }; -}; diff --git a/Documentation/devicetree/bindings/mtd/partitions/seama.yaml b/Documentation/devicetree/bindings/mtd/partitions/seama.yaml new file mode 100644 index 000000000000..4c1cbf43e81a --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/partitions/seama.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/partitions/seama.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Seattle Image Partitions + +description: The SEAttle iMAge (SEAMA) partition is a type of partition + used for NAND flash devices. This type of flash image is found in some + D-Link routers such as DIR-645, DIR-842, DIR-859, DIR-860L, DIR-885L, + DIR890L and DCH-M225, as well as in WD and NEC routers on the ath79 + (MIPS), Broadcom BCM53xx, and RAMIPS platforms. This partition type + does not have children defined in the device tree, they need to be + detected by software. + +allOf: + - $ref: partition.yaml# + +maintainers: + - Linus Walleij <linus.walleij@linaro.org> + +properties: + compatible: + const: seama + +required: + - compatible + +unevaluatedProperties: false + +examples: + - | + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + + partition@0 { + compatible = "seama"; + reg = <0x0 0x800000>; + label = "firmware"; + }; + }; |