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-rw-r--r--board/gateworks/fsa.c736
1 files changed, 736 insertions, 0 deletions
diff --git a/board/gateworks/fsa.c b/board/gateworks/fsa.c
new file mode 100644
index 00000000000..1af8021057c
--- /dev/null
+++ b/board/gateworks/fsa.c
@@ -0,0 +1,736 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2025 Gateworks Corporation
+ */
+
+#include <command.h>
+#include <hexdump.h>
+#include <i2c.h>
+#include <dm.h>
+#include <dm/device.h>
+#include <dm/device_compat.h>
+#include <dm/device-internal.h> // device_remove/device_unbind
+#include <asm-generic/gpio.h>
+#include <fdt_support.h>
+#include <linux/delay.h>
+
+#include "fsa.h"
+
+static int fsa;
+static struct udevice *fsa_gpiodevs[FSA_MAX] = { NULL };
+
+/* find the ofnode of the FSA i2c bus */
+static ofnode fsa_get_ofnode(int fsa)
+{
+ char str[32];
+
+ /* by alias */
+ snprintf(str, sizeof(str), "fsa%d", fsa);
+ return ofnode_get_aliases_node(str);
+}
+
+static int fsa_get_dtnode(void *fdt, int fsa)
+{
+ char str[32];
+
+ /* by alias */
+ snprintf(str, sizeof(str), "fsa%d", fsa);
+ return fdt_path_offset(fdt, fdt_get_alias(fdt, str));
+}
+
+static const char * const fsa_gpio_config_names[] = { "NC", "", "input", "output-low",
+ "output-high" };
+
+static const char *fsa_gpio_config_name(struct fsa_gpio_desc *desc)
+{
+ if (desc->config < ARRAY_SIZE(fsa_gpio_config_names))
+ return fsa_gpio_config_names[desc->config];
+ return NULL;
+};
+
+static char *fsa_get_gpio_desc(struct fsa_gpio_desc *desc, char *str, int sz)
+{
+ str[0] = 0;
+ if (desc->source == 0xff) {
+ snprintf(str, sz, "fsa_gpio%d : %s %s",
+ desc->offset + 1,
+ desc->name,
+ fsa_gpio_config_name(desc));
+ } else if (desc->config) {
+ snprintf(str, sz, "gpio@%02x_%02d: %s %s",
+ desc->source,
+ desc->offset,
+ desc->name,
+ fsa_gpio_config_name(desc));
+ }
+ return str;
+}
+
+static void fsa_show_gpio_descs(const char *prefix, int fsa, struct fsa_board_info *board_info,
+ struct fsa_user_info *user_info)
+{
+ char str[128];
+ int i;
+
+ /* display slot specific gpios */
+ for (i = 0; i < board_info->sockgpios; i++) {
+ fsa_get_gpio_desc(&user_info->gpios[i], str, sizeof(str));
+ printf("%s%-2d: %s\n", prefix, i, str);
+ }
+ /* display io-expander specific gpios */
+ if (fsa_gpiodevs[fsa]) {
+ for (i = board_info->sockgpios;
+ i < (board_info->sockgpios + board_info->ioexpgpios);
+ i++) {
+ fsa_get_gpio_desc(&user_info->gpios[i], str, sizeof(str));
+ printf("%s%-2d: %s\n", prefix, i, str);
+ }
+ }
+}
+
+/* detect gpio expander by address and deal with enabling/disabling/adding gpio expander to dt */
+static int fsa_get_gpiodev(int fsa, int addr, struct udevice **devp)
+{
+ struct udevice *bus, *dev;
+ char gpio_name[32];
+ int ret;
+
+ ret = device_get_global_by_ofnode(fsa_get_ofnode(fsa), &bus);
+ if (ret)
+ return ret;
+
+ sprintf(gpio_name, "gpio@%02x", addr);
+
+ /* probe device on i2c bus */
+ ret = dm_i2c_probe(bus, addr, 0, &dev);
+ switch (ret) {
+ case -EREMOTEIO: /* chip is not present on i2c bus */
+ /* if device is in dt remove/unbind/disable it */
+ ret = device_find_child_by_name(bus, gpio_name, &dev);
+ if (ret)
+ return ret;
+ ret = ofnode_set_enabled(dev_ofnode(dev), false);
+ if (ret)
+ return ret;
+ ret = device_unbind(dev);
+ if (ret)
+ return ret;
+ ret = device_remove(dev, DM_REMOVE_NORMAL);
+ if (ret)
+ return ret;
+ return ret;
+ case -ENOSYS: /* chip found but driver invalid */
+ /* if device is in not in dt add/bind it */
+ return ret;
+ case 0: /* chip responded and driver bound */
+ break;
+ }
+
+ if (devp)
+ *devp = dev;
+ return 0;
+}
+
+/* add gpio's to gpio device: GPIO device must be probed before you can manipulate it */
+static int fsa_config_gpios(int fsa, struct fsa_user_info *info, int gpios, struct udevice *dev)
+{
+ struct fsa_gpio_desc *desc;
+ struct gpio_desc gdesc;
+ struct udevice *gdev;
+ int i, ret, flags;
+ char name[32];
+
+ /* configure GPIO's */
+ for (i = 0; i < gpios; i++) {
+ desc = &info->gpios[i];
+ if (desc->config < FSA_GPIO_INPUT)
+ continue;
+ memset(&gdesc, 0, sizeof(gdesc));
+
+ if (desc->source == 0xff) {
+ /* Board specific IMX8M GPIO's: find dev of controller by line-name */
+ sprintf(name, "fsa%d_gpio%d", fsa, desc->offset + 1);
+ uclass_foreach_dev_probe(UCLASS_GPIO, gdev) {
+ ret = dev_read_stringlist_search(gdev, "gpio-line-names", name);
+ if (ret >= 0) {
+ gdesc.dev = gdev;
+ gdesc.offset = ret;
+ break;
+ }
+ }
+ } else {
+ /* port expander GPIOs */
+ gdesc.dev = dev;
+ gdesc.offset = desc->offset;
+ }
+
+ if (!gdesc.dev)
+ continue;
+
+ sprintf(name, "fsa%d_%s", fsa, desc->name);
+ switch (desc->config) {
+ case FSA_GPIO_INPUT:
+ flags = GPIOD_IS_IN;
+ break;
+ case FSA_GPIO_OUTPUT_LOW:
+ flags = GPIOD_IS_OUT;
+ break;
+ case FSA_GPIO_OUTPUT_HIGH:
+ flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE;
+ break;
+ }
+ if (!dm_gpio_request(&gdesc, name))
+ dm_gpio_clrset_flags(&gdesc, GPIOD_MASK_DIR, flags);
+ }
+
+ return 0;
+}
+
+static int fsa_read_board_config(int fsa, struct fsa_board_info *info)
+{
+ struct udevice *dev;
+ int chksum;
+ int i, ret;
+ ofnode node;
+
+ /* find eeprom dev */
+ node = ofnode_find_subnode(fsa_get_ofnode(fsa), "eeprom@54");
+ if (!ofnode_valid(node))
+ return -EINVAL;
+ ret = device_get_global_by_ofnode(node, &dev);
+ if (ret)
+ return ret;
+
+ /* read eeprom */
+ ret = dm_i2c_read(dev, 0, (uint8_t *)info, sizeof(*info));
+ if (ret) {
+ dev_err(dev, "read failed: %d\n", ret);
+ return ret;
+ }
+
+ /* validate checksum */
+ for (chksum = 0, i = 0; i < (int)sizeof(*info) - 2; i++)
+ chksum += ((unsigned char *)info)[i];
+ if ((info->chksum[0] != ((chksum >> 8) & 0xff)) ||
+ (info->chksum[1] != (chksum & 0xff))) {
+ dev_err(dev, "FSA%d EEPROM: Invalid User Config Checksum\n", fsa);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, info, sizeof(*info));
+ memset(info, 0, sizeof(*info));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int fsa_read_user_config(int fsa, struct fsa_user_info *info)
+{
+ struct udevice *dev;
+ int chksum;
+ int i, ret;
+ ofnode node;
+
+ /* find eeprom dev */
+ node = ofnode_find_subnode(fsa_get_ofnode(fsa), "eeprom@55");
+ if (!ofnode_valid(node))
+ return -EINVAL;
+ ret = device_get_global_by_ofnode(node, &dev);
+ if (ret)
+ return ret;
+
+ /* read eeprom */
+ ret = dm_i2c_read(dev, 0, (uint8_t *)info, sizeof(*info));
+ if (ret) {
+ dev_err(dev, "read failed: %d\n", ret);
+ return ret;
+ }
+
+ /* validate checksum */
+ for (chksum = 0, i = 0; i < (int)sizeof(*info) - 2; i++)
+ chksum += ((unsigned char *)info)[i];
+ if ((info->chksum[0] != ((chksum >> 8) & 0xff)) ||
+ (info->chksum[1] != (chksum & 0xff))) {
+ dev_err(dev, "FSA%d EEPROM: Invalid User Config Checksum\n", fsa);
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, info, sizeof(*info));
+ memset(info, 0, sizeof(*info));
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int fsa_write_user_config(int fsa, struct fsa_user_info *info)
+{
+ struct udevice *bus, *dev;
+ int i, n, chunk, slave, base, ret;
+ ofnode node;
+ int chksum;
+
+ /* create checksum */
+ for (chksum = 0, i = 0; i < (int)sizeof(*info) - 2; i++)
+ chksum += ((unsigned char *)info)[i];
+ info->chksum[0] = chksum >> 8;
+ info->chksum[1] = chksum & 0xff;
+
+ /* find eeprom dev */
+ node = ofnode_find_subnode(fsa_get_ofnode(fsa), "eeprom@55");
+ ret = device_get_global_by_ofnode(node, &dev);
+ if (ret)
+ return ret;
+ bus = dev->parent;
+ base = dev_read_addr(dev);
+
+ /* write in 16byte chunks (multi-byte writes fail larger than that) */
+ chunk = 16;
+ slave = -1;
+ for (i = 0; i < sizeof(*info); i += chunk) {
+ /* select device based on offset */
+ if ((base + (i / 256)) != slave) {
+ slave = base + (i / 256);
+ ret = i2c_get_chip(bus, slave, 1, &dev);
+ if (ret) {
+ dev_err(bus, "failed to get eeprom@0x%02x: %d\n", slave, ret);
+ return ret;
+ }
+ }
+ /* select byte count */
+ n = sizeof(*info) - i;
+ if (n > chunk)
+ n = chunk;
+ ret = dm_i2c_write(dev, i % 256, (uint8_t *)info + i, n);
+ if (ret) {
+ dev_err(dev, "write failed: %d\n", ret);
+ return ret;
+ }
+ mdelay(11);
+ }
+
+ return ret;
+}
+
+static int fsa_detect(int fsa, struct fsa_board_info *board_info, struct fsa_user_info *user_info,
+ bool gpio)
+{
+ int ret;
+
+ ret = fsa_read_board_config(fsa, board_info);
+ if (ret)
+ return ret;
+ if (user_info) {
+ ret = fsa_read_user_config(fsa, user_info);
+ if (ret)
+ return ret;
+ /* detect port expander */
+ if (gpio && !fsa_get_gpiodev(fsa, 0x20, &fsa_gpiodevs[fsa]))
+ fsa_config_gpios(fsa, user_info,
+ board_info->sockgpios + board_info->ioexpgpios,
+ fsa_gpiodevs[fsa]);
+ }
+
+ return ret;
+}
+
+static int ft_fixup_stringlist_elem(void *fdt, int offset, const char *prop, int elem,
+ const char *val)
+{
+ const char *list, *end;
+ char *new, *buf;
+ int length;
+ int sz = 0;
+ int i = 0;
+ int ret;
+
+ if (offset < 0 || elem < 0 || !val) {
+ printf("%s -EINVAL\n", __func__);
+ return -EINVAL;
+ }
+
+ list = fdt_getprop(fdt, offset, prop, &length);
+
+ /* no property or invalid params */
+ if (!list || length < 0) {
+ printf("%s failed - no property\n", __func__);
+ return -EINVAL;
+ }
+
+ /* create new buffer with enough space */
+ buf = calloc(1, length + strlen(val));
+ new = buf;
+
+ /* iterate over current stringlist and build new list into buf */
+ end = list + length;
+ while (list < end) {
+ length = strnlen(list, end - list) + 1;
+ sz += length;
+ /* insert new value into buf */
+ if (elem == i) {
+ strcpy(new, val);
+ new += strlen(val) + 1;
+ } else {
+ strcpy(new, list);
+ new += length;
+ }
+ list += length;
+ i++;
+ }
+ length = new - buf;
+ ret = fdt_setprop(fdt, offset, prop, buf, length);
+ free(buf);
+ if (ret)
+ printf("%s failed %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int ft_fixup_fsa_gpio_name(void *fdt, int offset, int fsa, int gpio, const char *name)
+{
+ const char *prop = "gpio-line-names";
+ char str[32];
+
+ sprintf(str, "fsa%d_%s", fsa, name);
+
+ if (!fdt_getprop(fdt, offset, prop, NULL)) {
+ char buf[16] = { 0 };
+
+ fdt_setprop(fdt, offset, prop, &buf, sizeof(buf));
+ }
+
+ return ft_fixup_stringlist_elem(fdt, offset, prop, gpio, str);
+}
+
+static void fsa_show_details(int fsa, struct fsa_board_info *board, struct fsa_user_info *user)
+{
+ printf("FSA%d: %s\n", fsa, board->model);
+ printf("description: %s\n", user->desc);
+ printf("overlay: %s\n", user->overlay);
+ fsa_show_gpio_descs("\t", fsa, board, user);
+}
+
+int fsa_init(void)
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+ int fsa, ret;
+
+ for (fsa = 1; fsa < FSA_MAX; fsa++) {
+ ret = fsa_detect(fsa, &board_info, &user_info, true);
+ if (!ret)
+ printf("FSA%d: %s %s\n", fsa, board_info.model, user_info.desc);
+ }
+
+ return 0;
+}
+
+int fsa_show(void)
+{
+ struct fsa_board_info board_info;
+ int fsa, ret;
+
+ for (fsa = 1; fsa < FSA_MAX; fsa++) {
+ ret = fsa_detect(fsa, &board_info, NULL, false);
+ if (!ret) {
+ printf("FSA%d : %s %d %02x-%02x-%02x%02x\n", fsa,
+ board_info.model, board_info.serial,
+ board_info.mfgdate[0], board_info.mfgdate[1],
+ board_info.mfgdate[2], board_info.mfgdate[3]);
+ }
+ }
+ return 0;
+}
+
+/* fixup gpio line names for fsa gpios */
+int fsa_ft_fixup(void *fdt)
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+ int fsa, i, ret;
+ char path[128];
+ char str[32];
+ ofnode node;
+ int off;
+
+ /* iterate over FSA's and rename gpio's */
+ for (fsa = 1; fsa < FSA_MAX; fsa++) {
+ /* disable FSA ioexp node if disabled in controlling dt */
+ off = fdt_subnode_offset(fdt, fsa_get_dtnode(fdt, fsa), "gpio@20");
+ if (off >= 0) {
+ if (!fdt_get_path(fdt, off, path, sizeof(path))) {
+ node = ofnode_path(path);
+ if (ofnode_valid(node) && !ofnode_is_enabled(node))
+ fdt_setprop_string(fdt, off, "status", "disabled");
+ }
+ }
+
+ /* detect FSA eeprom */
+ if (fsa_detect(fsa, &board_info, &user_info, false))
+ continue;
+
+ /* configure GPIO's */
+ for (i = 0; i < board_info.sockgpios + board_info.ioexpgpios; i++) {
+ if (user_info.gpios[i].config < FSA_GPIO_INPUT)
+ continue;
+
+ if (user_info.gpios[i].source == 0xff) {
+ /* Board specific IMX8M GPIO's */
+ for (off = fdt_node_offset_by_prop_value(fdt, 0,
+ "gpio-controller", NULL,
+ 0);
+ off >= 0;
+ off = fdt_node_offset_by_prop_value(fdt, off,
+ "gpio-controller", NULL,
+ 0)
+ ) {
+ sprintf(str, "fsa%d_gpio%d", fsa,
+ user_info.gpios[i].offset + 1);
+ ret = fdt_stringlist_search(fdt, off, "gpio-line-names",
+ str);
+ if (ret >= 0) {
+ ft_fixup_fsa_gpio_name(fdt, off, fsa, ret,
+ user_info.gpios[i].name);
+ break;
+ }
+ }
+ } else {
+ /* port expander GPIOs */
+ off = fdt_subnode_offset(fdt, fsa_get_dtnode(fdt, fsa), "gpio@20");
+ ft_fixup_fsa_gpio_name(fdt, off, fsa, user_info.gpios[i].offset,
+ user_info.gpios[i].name);
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int do_fsa_dev(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+ int i;
+
+ if (argc < 2) {
+ /* list FSAs */
+ printf("detecting FSA Adapters:\n");
+ for (i = 1; i < FSA_MAX; i++) {
+ if (!fsa_read_board_config(i, &board_info) &&
+ !fsa_read_user_config(i, &user_info))
+ printf("FSA%d : %s %s\n", i, board_info.model, user_info.desc);
+ }
+ } else {
+ /* select FSA */
+ fsa = simple_strtoul(argv[1], NULL, 10);
+ }
+
+ if (fsa) {
+ /* read FSA */
+ if (!fsa_read_board_config(fsa, &board_info) &&
+ !fsa_read_user_config(fsa, &user_info)) {
+ printf("selected:\n");
+ fsa_show_details(fsa, &board_info, &user_info);
+ } else {
+ printf("FSA%d not detected\n", fsa);
+ fsa = 0;
+ }
+ } else {
+ printf("no FSA currently selected\n");
+ }
+
+ return 0;
+}
+
+static int do_fsa_desc(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+
+ /* strip off leading cmd arg */
+ argc--;
+ argv++;
+
+ if (!fsa) {
+ printf("No FSA selected\n");
+ return CMD_RET_USAGE;
+ }
+
+ if (fsa_read_board_config(fsa, &board_info) || fsa_read_user_config(fsa, &user_info)) {
+ printf("can't detect FSA%d\n", fsa);
+ return CMD_RET_USAGE;
+ }
+
+ /* set */
+ if (argc) {
+ strlcpy(user_info.desc, argv[0], sizeof(user_info.desc));
+ if (fsa_write_user_config(fsa, &user_info))
+ return CMD_RET_FAILURE;
+ }
+
+ /* show */
+ fsa_show_details(fsa, &board_info, &user_info);
+
+ return CMD_RET_SUCCESS;
+}
+
+static int do_fsa_overlay(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+
+ /* strip off leading cmd arg */
+ argc--;
+ argv++;
+
+ if (!fsa) {
+ printf("No FSA selected\n");
+ return CMD_RET_USAGE;
+ }
+
+ if (fsa_read_board_config(fsa, &board_info) || fsa_read_user_config(fsa, &user_info)) {
+ printf("can't detect FSA%d\n", fsa);
+ return CMD_RET_USAGE;
+ }
+
+ /* set */
+ if (argc) {
+ strlcpy(user_info.overlay, argv[0], sizeof(user_info.overlay));
+ if (fsa_write_user_config(fsa, &user_info))
+ return CMD_RET_FAILURE;
+ }
+
+ /* show */
+ fsa_show_details(fsa, &board_info, &user_info);
+
+ return CMD_RET_SUCCESS;
+}
+
+static int do_fsa_gpio(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct fsa_board_info board_info;
+ struct fsa_user_info user_info;
+ struct fsa_gpio_desc desc;
+ char str[64];
+ int i, j;
+
+ /* strip off leading cmd arg */
+ argc--;
+ argv++;
+
+ if (!fsa) {
+ printf("No FSA selected\n");
+ return CMD_RET_USAGE;
+ }
+
+ if (fsa_read_board_config(fsa, &board_info) || fsa_read_user_config(fsa, &user_info)) {
+ printf("can't detect FSA%d\n", fsa);
+ return CMD_RET_USAGE;
+ }
+
+ if (!argc) {
+ /* show all gpios */
+ fsa_show_gpio_descs("\t", fsa, &board_info, &user_info);
+ return CMD_RET_SUCCESS;
+ }
+
+ if (!isdigit(argv[0][0])) {
+ printf("invalid gpio offset: %s\n", argv[0]);
+ return CMD_RET_USAGE;
+ }
+
+ memset(&desc, 0, sizeof(desc));
+ i = simple_strtoul(argv[0], NULL, 10);
+
+ if (i >= 0 && i < board_info.sockgpios) {
+ desc.offset = i;
+ desc.source = 0xff;
+ } else if (i >= board_info.sockgpios &&
+ i < (board_info.sockgpios + board_info.ioexpgpios) &&
+ fsa_gpiodevs[fsa]) {
+ desc.offset = i - board_info.sockgpios;
+ desc.source = 0x20;
+ } else {
+ printf("invalid index %d", i);
+ return CMD_RET_FAILURE;
+ }
+
+ if (argc > 1) {
+ if (user_info.gpios[i].config == FSA_GPIO_NC) {
+ printf("can not alter NC gpio\n");
+ return CMD_RET_FAILURE;
+ }
+ strlcpy(desc.name, argv[1], sizeof(desc.name));
+ if (!*desc.name) {
+ printf("FSA%d %s erasing gpio %d\n", fsa, board_info.model, i);
+ memset(&user_info.gpios[i], 0, sizeof(desc));
+ if (fsa_write_user_config(fsa, &user_info))
+ return CMD_RET_FAILURE;
+ return CMD_RET_SUCCESS;
+ }
+ }
+ if (argc > 2) {
+ if (user_info.gpios[i].config == FSA_GPIO_NC) {
+ printf("can not alter NC gpio\n");
+ return CMD_RET_FAILURE;
+ }
+ for (j = 1; j < ARRAY_SIZE(fsa_gpio_config_names); j++) {
+ if (!strcasecmp(argv[2], fsa_gpio_config_names[j])) {
+ desc.config = j;
+ break;
+ }
+ };
+ if (j >= ARRAY_SIZE(fsa_gpio_config_names)) {
+ printf("invalid config type '%s\n", argv[2]);
+ return CMD_RET_FAILURE;
+ }
+ }
+
+ /* show a specific gpio */
+ if (argc == 1) {
+ printf("FSA%d %s showing gpio %d\n", fsa, board_info.model, i);
+ printf("%s\n", fsa_get_gpio_desc(&user_info.gpios[i], str, sizeof(str)));
+ return CMD_RET_SUCCESS;
+ }
+
+ /* set a specific gpio */
+ else if (argc == 3) {
+ printf("FSA%d %s updating gpio %d\n", fsa, board_info.model, i);
+ memcpy(&user_info.gpios[i], &desc, sizeof(desc));
+ if (fsa_write_user_config(fsa, &user_info))
+ return CMD_RET_FAILURE;
+ return CMD_RET_SUCCESS;
+ }
+
+ return CMD_RET_USAGE;
+}
+
+static struct cmd_tbl cmd_fsa_sub[] = {
+ U_BOOT_CMD_MKENT(dev, 1, 1, do_fsa_dev, "", ""),
+ U_BOOT_CMD_MKENT(gpio, 4, 1, do_fsa_gpio, "", ""),
+ U_BOOT_CMD_MKENT(description, 1, 1, do_fsa_desc, "", ""),
+ U_BOOT_CMD_MKENT(overlay, 1, 1, do_fsa_overlay, "", ""),
+};
+
+static int do_fsa(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
+{
+ struct cmd_tbl *c;
+
+ /* strip off leading fsa arg */
+ argc--;
+ argv++;
+
+ c = find_cmd_tbl(argv[0], cmd_fsa_sub, ARRAY_SIZE(cmd_fsa_sub));
+ if (c)
+ return c->cmd(cmdtp, flag, argc, argv);
+ return CMD_RET_USAGE;
+}
+
+U_BOOT_LONGHELP(fsa,
+ "dev [dev] - show or set current FSA adapter\n"
+ "fsa gpio - show current gpio descriptors\n"
+ "fsa gpio [<offset>]|[<offset> <source>] - show a specific gpio descriptor\n"
+ "fsa gpio [<offset> <name> <input|output-low|output-high> [source]] - set a gpio descriptor\n"
+ "fsa description [description] - show or set the FSA user description string\n"
+ "fsa overlay [overlay] - show or set the FSA overlay string\n"
+);
+
+U_BOOT_CMD(fsa, 6, 1, do_fsa,
+ "Flexible Socket Adapter",
+ fsa_help_text
+);
generated by cgit v1.2.3 (git 2.0.4) at 2025-07-15 16:31:38 +0000