bindings/memory-controllers/exynos-srom.yaml

1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/exynos-srom.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10   - Krzysztof Kozlowski <krzk@kernel.org>
19       - const: samsung,exynos4210-srom
24   "#address-cells":
27   "#size-cells":
34       Reflects the memory layout with four integer values per bank. Format:
35       <bank-number> 0 <parent address of bank> <size>
36       Up to four banks are supported.
39   "^.*@[0-3],[a-f0-9]+$":
46       of the relevant SROM bank.
51           Bank number, base address (relative to start of the bank) and size
53           typically 0 as this is the start of the bank.
56       reg-io-width:
61       samsung,srom-page-mode:
67       samsung,srom-timing:
68         $ref: /schemas/types.yaml#/definitions/uint32-array
73           Array of 6 integers, specifying bank timings in the following order:
77           Tacp: Page mode access cycle at Page mode (0 - 15)
78           Tcah: Address holding time after CSn (0 - 15)
79           Tcoh: Chip selection hold on OEn (0 - 15)
80           Tacc: Access cycle (0 - 31, the actual time is N + 1)
81           Tcos: Chip selection set-up before OEn (0 - 15)
82           Tacs: Address set-up before CSn (0 - 15)
85       - reg
86       - samsung,srom-timing
89   - compatible
90   - reg
95   - |
97     memory-controller@12560000 {
98         compatible = "samsung,exynos4210-srom";
102   - |
103     // Example: SROMc with SMSC911x ethernet chip on bank 3
104     memory-controller@12570000 {
105         #address-cells = <2>;
106         #size-cells = <1>;
112         compatible = "samsung,exynos4210-srom";
117             reg = <3 0 0x10000>;     // Bank 3, offset = 0
118             phy-mode = "mii";
119             interrupt-parent = <&gpx0>;
121             reg-io-width = <2>;
122             smsc,irq-push-pull;
123             smsc,force-internal-phy;
125             samsung,srom-page-mode;
126             samsung,srom-timing = <9 12 1 9 1 1>;