| /linux/Documentation/driver-api/ |
| H A D | nvmem.rst | 4 NVMEM Subsystem
9 This document explains the NVMEM Framework along with the APIs provided,
14 *NVMEM* is the abbreviation for Non Volatile Memory layer. It is used to
18 Before this framework existed, NVMEM drivers like eeprom were stored in
31 NVMEM Providers
34 NVMEM provider refers to an entity that implements methods to initialize, read
37 2. Registering/Unregistering the NVMEM provider
40 A NVMEM provider can register with NVMEM core by supplying relevant
41 nvmem configuration to nvmem_register(), on success core would return a valid
62 Device drivers can define and register an nvmem cell using the nvmem_cell_info
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| /linux/include/linux/ |
| H A D | nvmem-provider.h | 3 * nvmem framework provider.
40 * struct nvmem_keepout - NVMEM register keepout range.
53 * struct nvmem_cell_info - NVMEM cell description
55 * @offset: Offset within the NVMEM device.
78 * struct nvmem_config - NVMEM device configuration
84 * @cells: Optional array of pre-defined NVMEM cells.
86 * @add_legacy_fixed_of_cells: Read fixed NVMEM cells from old OF syntax.
91 * @type: Type of the nvmem storage
102 * @layout: Fixed layout associated with this nvmem device.
104 * Note: A default "nvmem<id>" name will be assigned to the device if
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| H A D | nvmem-consumer.h | 3 * nvmem framework consumer.
27 * @cell_name: Name of the nvmem cell as defined in the name field of
68 /* direct nvmem device read/write interface */
72 void nvmem_device_put(struct nvmem_device *nvmem);
73 void devm_nvmem_device_put(struct device *dev, struct nvmem_device *nvmem);
74 int nvmem_device_read(struct nvmem_device *nvmem, unsigned int offset,
76 int nvmem_device_write(struct nvmem_device *nvmem, unsigned int offset,
78 ssize_t nvmem_device_cell_read(struct nvmem_device *nvmem,
80 int nvmem_device_cell_write(struct nvmem_device *nvmem,
83 const char *nvmem_dev_name(struct nvmem_device *nvmem);
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| /linux/Documentation/devicetree/bindings/mtd/partitions/ |
| H A D | nvmem-cells.yaml | 4 $id: http://devicetree.org/schemas/mtd/partitions/nvmem-cells.yaml#
7 title: Nvmem cells
10 Any partition containing the compatible "nvmem-cells" will register as a
11 nvmem provider.
12 Each direct subnodes represents a nvmem cell following the nvmem binding.
13 Nvmem binding to declare nvmem-cells can be found in:
14 Documentation/devicetree/bindings/nvmem/nvmem.yaml
21 - $ref: /schemas/nvmem/nvmem.yaml#
22 - $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml#
26 const: nvmem-cells
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| /linux/drivers/nvmem/ |
| H A D | layouts.c | 3 * NVMEM layout bus handling
11 #include <linux/nvmem-consumer.h>
12 #include <linux/nvmem-provider.h>
61 .name = "nvmem-layout",
92 static int nvmem_layout_create_device(struct nvmem_device *nvmem, in nvmem_layout_create_device() argument
104 layout->nvmem = nvmem; in nvmem_layout_create_device()
105 nvmem->layout = layout; in nvmem_layout_create_device()
110 dev->parent = &nvmem->dev; in nvmem_layout_create_device()
128 static int nvmem_layout_bus_populate(struct nvmem_device *nvmem, in nvmem_layout_bus_populate() argument
147 /* NVMEM layout buses expect only a single device representing the layout */ in nvmem_layout_bus_populate()
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| H A D | max77759-nvmem.c | 6 // NVMEM driver for Maxim MAX77759
14 #include <linux/nvmem-provider.h>
21 * NVMEM commands have a three byte header (which becomes part of the command),
35 struct max77759_nvmem *nvmem = priv; in max77759_nvmem_reg_read() local
47 ret = max77759_maxq_command(nvmem->max77759, cmd, rsp); in max77759_nvmem_reg_read()
52 dev_warn(nvmem->dev, "protocol error (read)\n"); in max77759_nvmem_reg_read()
64 struct max77759_nvmem *nvmem = priv; in max77759_nvmem_reg_write() local
78 ret = max77759_maxq_command(nvmem->max77759, cmd, rsp); in max77759_nvmem_reg_write()
83 dev_warn(nvmem->dev, "protocol error (write)\n"); in max77759_nvmem_reg_write()
104 struct max77759_nvmem *nvmem; in max77759_nvmem_probe() local
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| /linux/Documentation/devicetree/bindings/thermal/ |
| H A D | sprd-thermal.yaml | 30 nvmem-cells:
33 Reference to nvmem nodes for the calibration data.
35 nvmem-cell-names:
60 nvmem-cells:
63 Reference to an nvmem node for the calibration data.
65 nvmem-cell-names:
70 - nvmem-cells
71 - nvmem-cell-names
80 - nvmem-cells
81 - nvmem-cell-names
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| H A D | mediatek,lvts-thermal.yaml | 46 nvmem-cells:
52 nvmem-cell-names:
75 nvmem-cells:
78 nvmem-cell-names:
91 nvmem-cells:
94 nvmem-cell-names:
114 - nvmem-cells
115 - nvmem-cell-names
136 nvmem-cells = <&lvts_efuse_data1 &lvts_efuse_data2>;
137 nvmem-cell-names = "lvts-calib-data-1", "lvts-calib-data-2";
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| /linux/Documentation/devicetree/bindings/power/reset/ |
| H A D | nvmem-reboot-mode.yaml | 4 $id: http://devicetree.org/schemas/power/reset/nvmem-reboot-mode.yaml#
7 title: Generic NVMEM reboot mode
14 and stores it in the NVMEM cell named "reboot-mode". The bootloader can
19 const: nvmem-reboot-mode
21 nvmem-cells:
23 A phandle pointing to the nvmem-cells node where the vendor-specific
27 nvmem-cell-names:
40 - nvmem-cells
41 - nvmem-cell-names
48 compatible = "nvmem-reboot-mode";
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| /linux/Documentation/devicetree/bindings/nvmem/layouts/ |
| H A D | fixed-layout.yaml | 4 $id: http://devicetree.org/schemas/nvmem/layouts/fixed-layout.yaml#
7 title: NVMEM layout for fixed NVMEM cells
10 Many NVMEM devices have hardcoded cells layout (offset and size of defined
11 NVMEM content doesn't change).
13 This binding allows defining such NVMEM layout with its cells. It can be used
14 on top of any NVMEM device.
42 nvmem-layout {
50 #nvmem-cell-cells = <1>;
56 #nvmem-cell-cells = <1>;
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| H A D | nvmem-layout.yaml | 4 $id: http://devicetree.org/schemas/nvmem/layouts/nvmem-layout.yaml#
7 title: NVMEM (Non Volatile Memory) layouts
15 Most NVMEM layouts are static and thus do not require additional description
17 define and might require dynamic reading of the NVMEM device in order to
18 perform their parsing. The nvmem-layout container is here to describe these.
|
| /linux/arch/arm64/boot/dts/freescale/ |
| H A D | fsl-ls1028a-kontron-kbox-a-230-ls.dts | 59 nvmem-cells = <&base_mac_address 2>;
60 nvmem-cell-names = "mac-address";
65 nvmem-cells = <&base_mac_address 3>;
66 nvmem-cell-names = "mac-address";
87 nvmem-cells = <&base_mac_address 4>;
88 nvmem-cell-names = "mac-address";
97 nvmem-cells = <&base_mac_address 5>;
98 nvmem-cell-names = "mac-address";
107 nvmem-cells = <&base_mac_address 6>;
108 nvmem-cell-names = "mac-address";
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| H A D | fsl-ls1028a-kontron-sl28-var2.dts | 39 nvmem-cells = <&base_mac_address 2>;
40 nvmem-cell-names = "mac-address";
45 nvmem-cells = <&base_mac_address 3>;
46 nvmem-cell-names = "mac-address";
59 nvmem-cells = <&base_mac_address 0>;
60 nvmem-cell-names = "mac-address";
69 nvmem-cells = <&base_mac_address 1>;
70 nvmem-cell-names = "mac-address";
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| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | sprd,sc2720-adc.yaml | 37 nvmem-cells: true
39 nvmem-cell-names: true
51 nvmem-cells:
53 nvmem-cell-names:
60 nvmem-cells:
62 nvmem-cell-names:
77 - nvmem-cells
78 - nvmem-cell-names
95 nvmem-cells = <&adc_bcal1>, <&adc_bcal2>,
98 nvmem-cell-names = "big_scale_calib1", "big_scale_calib2",
|
| /linux/Documentation/ABI/stable/ |
| H A D | sysfs-bus-nvmem | 1 What: /sys/bus/nvmem/devices/.../force_ro
18 What: /sys/bus/nvmem/devices/.../nvmem
23 This file allows user to read/write the raw NVMEM contents.
24 Permissions for write to this file depends on the nvmem
31 hexdump /sys/bus/nvmem/devices/qfprom0/nvmem
41 What: /sys/bus/nvmem/devices/.../type
46 This read-only attribute allows user to read the NVMEM
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| /linux/Documentation/devicetree/bindings/net/ |
| H A D | sunplus,sp7021-emac.yaml | 62 nvmem-cells:
64 - description: nvmem cell address of MAC address
66 nvmem-cell-names:
67 description: names corresponding to the nvmem cells
75 - nvmem-cells
76 - nvmem-cell-names
117 nvmem-cells = <&mac_addr0>;
118 nvmem-cell-names = "mac-address";
125 nvmem-cells = <&mac_addr1>;
126 nvmem-cell-names = "mac-address";
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| H A D | nixge.txt | 15 - nvmem-cells: Phandle of nvmem cell containing the MAC address
16 - nvmem-cell-names: Should be "address"
31 nvmem-cells = <ð1_addr>;
32 nvmem-cell-names = "address";
54 nvmem-cells = <ð1_addr>;
55 nvmem-cell-names = "address";
70 nvmem-cells = <ð1_addr>;
71 nvmem-cell-names = "address";
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| /linux/drivers/mtd/ubi/ |
| H A D | nvmem.c | 6 /* UBI NVMEM provider */
8 #include <linux/nvmem-provider.h>
10 /* List of all NVMEM devices */
15 struct nvmem_device *nvmem; member
71 if (!of_get_child_by_name(np, "nvmem-layout")) in ubi_nvmem_add()
99 unv->nvmem = nvmem_register(&config); in ubi_nvmem_add()
100 if (IS_ERR(unv->nvmem)) { in ubi_nvmem_add()
101 ret = dev_err_probe(vi->dev, PTR_ERR(unv->nvmem), in ubi_nvmem_add()
102 "Failed to register NVMEM device\n"); in ubi_nvmem_add()
132 nvmem_unregister(unv->nvmem); in ubi_nvmem_remove()
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| /linux/arch/arm/boot/dts/broadcom/ |
| H A D | bcm47094-asus-rt-ac3100.dts | 16 #nvmem-cell-cells = <1>;
22 nvmem-cells = <&et0macaddr 0>;
23 nvmem-cell-names = "mac-address";
27 nvmem-cells = <&et0macaddr 1>;
28 nvmem-cell-names = "mac-address";
32 nvmem-cells = <&et0macaddr 2>;
33 nvmem-cell-names = "mac-address";
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| /linux/drivers/rtc/ |
| H A D | nvmem.c | 3 * RTC subsystem, nvmem interface
10 #include <linux/nvmem-consumer.h>
17 struct nvmem_device *nvmem; in devm_rtc_nvmem_register() local
25 nvmem = devm_nvmem_register(dev, nvmem_config); in devm_rtc_nvmem_register()
26 if (IS_ERR(nvmem)) in devm_rtc_nvmem_register()
27 dev_err(dev, "failed to register nvmem device for RTC\n"); in devm_rtc_nvmem_register()
29 return PTR_ERR_OR_ZERO(nvmem); in devm_rtc_nvmem_register()
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| /linux/Documentation/devicetree/bindings/nvmem/ |
| H A D | nvmem.yaml | 4 $id: http://devicetree.org/schemas/nvmem/nvmem.yaml#
7 title: NVMEM (Non Volatile Memory)
17 some data on NVMEM, for the OS to be able to retrieve these
42 nvmem-layout:
43 $ref: /schemas/nvmem/layouts/nvmem-layout.yaml
45 Alternative to the statically defined nvmem cells, this
65 nvmem-layout {
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| H A D | xlnx,zynqmp-nvmem.yaml | 4 $id: http://devicetree.org/schemas/nvmem/xlnx,zynqmp-nvmem.yaml#
18 - $ref: nvmem.yaml#
22 const: xlnx,zynqmp-nvmem-fw
31 soc-nvmem {
32 compatible = "xlnx,zynqmp-nvmem-fw";
33 nvmem-layout {
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| /linux/Documentation/devicetree/bindings/phy/ |
| H A D | sunplus,sp7021-usb2-phy.yaml | 36 nvmem-cell-names:
37 description: names corresponding to the nvmem cells of disconnect voltage
40 nvmem-cells:
41 description: nvmem cell address of disconnect voltage
55 - nvmem-cell-names
56 - nvmem-cells
70 nvmem-cell-names = "disc_vol";
71 nvmem-cells = <&disc_vol>;
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| /linux/drivers/soc/tegra/fuse/ |
| H A D | fuse-tegra.c | 12 #include <linux/nvmem-consumer.h>
13 #include <linux/nvmem-provider.h>
142 struct nvmem_config nvmem; in tegra_fuse_probe() local
203 memset(&nvmem, 0, sizeof(nvmem)); in tegra_fuse_probe()
204 nvmem.dev = &pdev->dev; in tegra_fuse_probe()
205 nvmem.name = "fuse"; in tegra_fuse_probe()
206 nvmem.id = -1; in tegra_fuse_probe()
207 nvmem.owner = THIS_MODULE; in tegra_fuse_probe()
208 nvmem.cells = fuse->soc->cells; in tegra_fuse_probe()
209 nvmem.ncells = fuse->soc->num_cells; in tegra_fuse_probe()
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| /linux/Documentation/devicetree/bindings/soc/imx/ |
| H A D | imx8m-soc.yaml | 51 nvmem-cells:
53 description: Phandle to the SOC Unique ID provided by a nvmem node
55 nvmem-cell-names:
60 - nvmem-cells
61 - nvmem-cell-names
81 nvmem-cells = <&imx8mm_uid>;
82 nvmem-cell-names = "soc_unique_id";
|