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author | Tom Rini <trini@konsulko.com> | 2020-08-04 18:11:02 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2020-08-04 18:11:02 +0300 |
commit | f1c0b7cd4be2081ae3711cec2c4cc2910a5817e1 (patch) | |
tree | 694f503767f8511bffc8c5e6360f542e50428a0d /board/toradex/common/tdx-eeprom.c | |
parent | 993b59f0451cb102f23714478a64361b44694fc6 (diff) | |
parent | 3e980a2d8bd13d0d1c2d5cec9e57a47b6cff8b92 (diff) | |
download | u-boot-f1c0b7cd4be2081ae3711cec2c4cc2910a5817e1.tar.xz |
Merge tag 'u-boot-imx-20200804' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx
For 2020.10
-----------
- fixes for Toradex board
- fix warnings from previous PR
- HAB: reset instead of panic after failure
- new board: MYiR Tech MYS-6ULX
- mx6cuboxi: use OF_PLATDATA
- further changes for DM
Travis: https://travis-ci.org/github/sbabic/u-boot-imx/builds/714513163
Diffstat (limited to 'board/toradex/common/tdx-eeprom.c')
-rw-r--r-- | board/toradex/common/tdx-eeprom.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/board/toradex/common/tdx-eeprom.c b/board/toradex/common/tdx-eeprom.c new file mode 100644 index 0000000000..fbc267dab6 --- /dev/null +++ b/board/toradex/common/tdx-eeprom.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2020 Toradex + */ + +#include <dm.h> +#include <i2c_eeprom.h> +#include <linux/errno.h> + +DECLARE_GLOBAL_DATA_PTR; + +static int get_tdx_eeprom(u32 eeprom_id, struct udevice **devp) +{ + int ret = 0; + int node; + ofnode eeprom; + char eeprom_str[16]; + const char *path; + + if (!gd->fdt_blob) { + printf("%s: don't have a valid gd->fdt_blob!\n", __func__); + return -EFAULT; + } + + node = fdt_path_offset(gd->fdt_blob, "/aliases"); + if (node < 0) + return -ENODEV; + + sprintf(eeprom_str, "eeprom%d", eeprom_id); + + path = fdt_getprop(gd->fdt_blob, node, eeprom_str, NULL); + if (!path) { + printf("%s: no alias for %s\n", __func__, eeprom_str); + return -ENODEV; + } + + eeprom = ofnode_path(path); + if (!ofnode_valid(eeprom)) { + printf("%s: invalid hardware path to EEPROM\n", __func__); + return -ENODEV; + } + + ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, devp); + if (ret) { + printf("%s: cannot find EEPROM by node\n", __func__); + return ret; + } + + return ret; +} + +int read_tdx_eeprom_data(u32 eeprom_id, int offset, u8 *buf, + int size) +{ + struct udevice *dev; + int ret; + + ret = get_tdx_eeprom(eeprom_id, &dev); + if (ret) + return ret; + + ret = i2c_eeprom_read(dev, 0x0, buf, size); + if (ret) { + printf("%s: error reading data from EEPROM id: %d!, ret = %d\n", + __func__, eeprom_id, ret); + return ret; + } + + return ret; +} + +int write_tdx_eeprom_data(u32 eeprom_id, int offset, u8 *buf, + int size) +{ + struct udevice *dev; + int ret; + + ret = get_tdx_eeprom(eeprom_id, &dev); + if (ret) + return ret; + + ret = i2c_eeprom_write(dev, 0x0, buf, size); + if (ret) { + printf("%s: error writing data to EEPROM id: %d, ret = %d\n", + __func__, eeprom_id, ret); + return ret; + } + + return ret; +} |