tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1UniPhier SD/eMMC controller
2
3Required properties:
4- compatible: should be one of the following:
5 "socionext,uniphier-sd-v2.91" - IP version 2.91
6 "socionext,uniphier-sd-v3.1" - IP version 3.1
7 "socionext,uniphier-sd-v3.1.1" - IP version 3.1.1
8- reg: offset and length of the register set for the device.
9- interrupts: a single interrupt specifier.
10- clocks: a single clock specifier of the controller clock.
11- reset-names: should contain the following:
12 "host" - mandatory for all versions
13 "bridge" - should exist only for "socionext,uniphier-sd-v2.91"
14 "hw" - should exist if eMMC hw reset line is available
15- resets: a list of reset specifiers, corresponding to the reset-names
16
17Optional properties:
18- pinctrl-names: if present, should contain the following:
19 "default" - should exist for all instances
20 "uhs" - should exist for SD instance with UHS support
21- pinctrl-0: pin control state for the default mode
22- pinctrl-1: pin control state for the UHS mode
23- dma-names: should be "rx-tx" if present.
24 This property can exist only for "socionext,uniphier-sd-v2.91".
25- dmas: a single DMA channel specifier
26 This property can exist only for "socionext,uniphier-sd-v2.91".
27- bus-width: see mmc.txt
28- cap-sd-highspeed: see mmc.txt
29- cap-mmc-highspeed: see mmc.txt
30- sd-uhs-sdr12: see mmc.txt
31- sd-uhs-sdr25: see mmc.txt
32- sd-uhs-sdr50: see mmc.txt
33- cap-mmc-hw-reset: should exist if reset-names contains "hw". see mmc.txt
34- non-removable: see mmc.txt
35
36Example:
37
38 sd: sdhc@5a400000 {
39 compatible = "socionext,uniphier-sd-v2.91";
40 reg = <0x5a400000 0x200>;
41 interrupts = <0 76 4>;
42 pinctrl-names = "default", "uhs";
43 pinctrl-0 = <&pinctrl_sd>;
44 pinctrl-1 = <&pinctrl_sd_uhs>;
45 clocks = <&mio_clk 0>;
46 reset-names = "host", "bridge";
47 resets = <&mio_rst 0>, <&mio_rst 3>;
48 dma-names = "rx-tx";
49 dmas = <&dmac 4>;
50 bus-width = <4>;
51 cap-sd-highspeed;
52 sd-uhs-sdr12;
53 sd-uhs-sdr25;
54 sd-uhs-sdr50;
55 };