bindings/sram/sram.yaml

4 $id: http://devicetree.org/schemas/sram/sram.yaml#
7 title: Generic on-chip SRAM
15   Each child of the sram node specifies a region of reserved memory. Each
25     pattern: "^sram(@.*)?"
30         - mmio-sram
31         - amlogic,meson-gxbb-sram
32         - arm,juno-sram-ns
38         - rockchip,rk3288-pmu-sram
47       SRAM clock.
58       Should translate from local addresses within the sram to bus addresses.
62       The flag indicating, that SRAM memory region has not to be remapped
67   "^([a-z0-9]*-)?sram(-section)?@[a-f0-9]+$":
70       Each child of the sram node specifies a region of reserved memory.
78             - allwinner,sun4i-a10-sram-a3-a4
79             - allwinner,sun4i-a10-sram-c1
80             - allwinner,sun4i-a10-sram-d
81             - allwinner,sun9i-a80-smp-sram
82             - allwinner,sun50i-a64-sram-c
83             - amlogic,meson8-ao-arc-sram
84             - amlogic,meson8b-ao-arc-sram
85             - amlogic,meson8-smp-sram
86             - amlogic,meson8b-smp-sram
92             - renesas,smp-sram
93             - rockchip,rk3066-smp-sram
96             - socionext,milbeaut-smp-sram
101           IO mem address range, relative to the SRAM range.
106           Indicates that the particular reserved SRAM area is addressable
112           Indicates that the reserved SRAM area may be accessed outside
146             - rockchip,rk3288-pmu-sram
157     sram@5c000000 {
158         compatible = "mmio-sram";
159         reg = <0x5c000000 0x40000>; /* 256 KiB SRAM at address 0x5c000000 */
165         smp-sram@100 {
169         device-sram@1000 {
174         exported-sram@20000 {
185     // Therefore reserved section sub-nodes have to be added to the mmio-sram
188     sram@2020000 {
189         compatible = "mmio-sram";
195         smp-sram@0 {
200         smp-sram@53000 {
207     // Amlogic's SMP-capable SoCs use part of the sram for the bringup of the cores.
211     // Therefore a reserved section sub-node has to be added to the mmio-sram
213     sram@d9000000 {
214         compatible = "mmio-sram";
220         smp-sram@1ff80 {
221             compatible = "amlogic,meson8b-smp-sram";
227     sram@e63c0000 {
228         compatible = "mmio-sram";
234         smp-sram@0 {
235             compatible = "renesas,smp-sram";
241     sram@10080000 {
242         compatible = "mmio-sram";
248         smp-sram@10080000 {
249             compatible = "rockchip,rk3066-smp-sram";
255     // Rockchip's rk3288 SoC uses the sram of pmu to store the function of
257     // the "pmu-sram" because it keeps power even in low power states
259     sram@ff720000 {
260       compatible = "rockchip,rk3288-pmu-sram", "mmio-sram";
265     // Allwinner's A80 SoC uses part of the secure sram for hotplugging of the
271     // check if this SRAM is usable first.
272     sram@20000 {
273         // 256 KiB secure SRAM at 0x20000
274         compatible = "mmio-sram";
280         smp-sram@1000 {
283             compatible = "allwinner,sun9i-a80-smp-sram";
289     sram@0 {
290         compatible = "mmio-sram";
296         smp-sram@f100 {
297             compatible = "socionext,milbeaut-smp-sram";