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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Texas Instruments' K3 R5 Remoteproc driver
- *
- * Copyright (C) 2018-2019 Texas Instruments Incorporated - http://www.ti.com/
- * Lokesh Vutla <lokeshvutla@ti.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <malloc.h>
- #include <remoteproc.h>
- #include <errno.h>
- #include <clk.h>
- #include <reset.h>
- #include <asm/io.h>
- #include <dm/device_compat.h>
- #include <linux/err.h>
- #include <linux/kernel.h>
- #include <linux/soc/ti/ti_sci_protocol.h>
- #include "ti_sci_proc.h"
- /*
- * R5F's view of this address can either be for ATCM or BTCM with the other
- * at address 0x0 based on loczrama signal.
- */
- #define K3_R5_TCM_DEV_ADDR 0x41010000
- /* R5 TI-SCI Processor Configuration Flags */
- #define PROC_BOOT_CFG_FLAG_R5_DBG_EN 0x00000001
- #define PROC_BOOT_CFG_FLAG_R5_DBG_NIDEN 0x00000002
- #define PROC_BOOT_CFG_FLAG_R5_LOCKSTEP 0x00000100
- #define PROC_BOOT_CFG_FLAG_R5_TEINIT 0x00000200
- #define PROC_BOOT_CFG_FLAG_R5_NMFI_EN 0x00000400
- #define PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE 0x00000800
- #define PROC_BOOT_CFG_FLAG_R5_BTCM_EN 0x00001000
- #define PROC_BOOT_CFG_FLAG_R5_ATCM_EN 0x00002000
- #define PROC_BOOT_CFG_FLAG_GEN_IGN_BOOTVECTOR 0x10000000
- /* R5 TI-SCI Processor Control Flags */
- #define PROC_BOOT_CTRL_FLAG_R5_CORE_HALT 0x00000001
- /* R5 TI-SCI Processor Status Flags */
- #define PROC_BOOT_STATUS_FLAG_R5_WFE 0x00000001
- #define PROC_BOOT_STATUS_FLAG_R5_WFI 0x00000002
- #define PROC_BOOT_STATUS_FLAG_R5_CLK_GATED 0x00000004
- #define PROC_BOOT_STATUS_FLAG_R5_LOCKSTEP_PERMITTED 0x00000100
- #define NR_CORES 2
- enum cluster_mode {
- CLUSTER_MODE_SPLIT = 0,
- CLUSTER_MODE_LOCKSTEP,
- };
- /**
- * struct k3_r5_mem - internal memory structure
- * @cpu_addr: MPU virtual address of the memory region
- * @bus_addr: Bus address used to access the memory region
- * @dev_addr: Device address from remoteproc view
- * @size: Size of the memory region
- */
- struct k3_r5f_mem {
- void __iomem *cpu_addr;
- phys_addr_t bus_addr;
- u32 dev_addr;
- size_t size;
- };
- /**
- * struct k3_r5f_core - K3 R5 core structure
- * @dev: cached device pointer
- * @cluster: pointer to the parent cluster.
- * @reset: reset control handle
- * @tsp: TI-SCI processor control handle
- * @mem: Array of available internal memories
- * @num_mem: Number of available memories
- * @atcm_enable: flag to control ATCM enablement
- * @btcm_enable: flag to control BTCM enablement
- * @loczrama: flag to dictate which TCM is at device address 0x0
- * @in_use: flag to tell if the core is already in use.
- */
- struct k3_r5f_core {
- struct udevice *dev;
- struct k3_r5f_cluster *cluster;
- struct reset_ctl reset;
- struct ti_sci_proc tsp;
- struct k3_r5f_mem *mem;
- int num_mems;
- u32 atcm_enable;
- u32 btcm_enable;
- u32 loczrama;
- bool in_use;
- };
- /**
- * struct k3_r5f_cluster - K3 R5F Cluster structure
- * @mode: Mode to configure the Cluster - Split or LockStep
- * @cores: Array of pointers to R5 cores within the cluster
- */
- struct k3_r5f_cluster {
- enum cluster_mode mode;
- struct k3_r5f_core *cores[NR_CORES];
- };
- static bool is_primary_core(struct k3_r5f_core *core)
- {
- return core == core->cluster->cores[0];
- }
- static int k3_r5f_proc_request(struct k3_r5f_core *core)
- {
- struct k3_r5f_cluster *cluster = core->cluster;
- int i, ret;
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP) {
- for (i = 0; i < NR_CORES; i++) {
- ret = ti_sci_proc_request(&cluster->cores[i]->tsp);
- if (ret)
- goto proc_release;
- }
- } else {
- ret = ti_sci_proc_request(&core->tsp);
- }
- return 0;
- proc_release:
- while (i >= 0) {
- ti_sci_proc_release(&cluster->cores[i]->tsp);
- i--;
- }
- return ret;
- }
- static void k3_r5f_proc_release(struct k3_r5f_core *core)
- {
- struct k3_r5f_cluster *cluster = core->cluster;
- int i;
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP)
- for (i = 0; i < NR_CORES; i++)
- ti_sci_proc_release(&cluster->cores[i]->tsp);
- else
- ti_sci_proc_release(&core->tsp);
- }
- static int k3_r5f_lockstep_release(struct k3_r5f_cluster *cluster)
- {
- int ret, c;
- dev_dbg(dev, "%s\n", __func__);
- for (c = NR_CORES - 1; c >= 0; c--) {
- ret = ti_sci_proc_power_domain_on(&cluster->cores[c]->tsp);
- if (ret)
- goto unroll_module_reset;
- }
- /* deassert local reset on all applicable cores */
- for (c = NR_CORES - 1; c >= 0; c--) {
- ret = reset_deassert(&cluster->cores[c]->reset);
- if (ret)
- goto unroll_local_reset;
- }
- return 0;
- unroll_local_reset:
- while (c < NR_CORES) {
- reset_assert(&cluster->cores[c]->reset);
- c++;
- }
- c = 0;
- unroll_module_reset:
- while (c < NR_CORES) {
- ti_sci_proc_power_domain_off(&cluster->cores[c]->tsp);
- c++;
- }
- return ret;
- }
- static int k3_r5f_split_release(struct k3_r5f_core *core)
- {
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- ret = ti_sci_proc_power_domain_on(&core->tsp);
- if (ret) {
- dev_err(core->dev, "module-reset deassert failed, ret = %d\n",
- ret);
- return ret;
- }
- ret = reset_deassert(&core->reset);
- if (ret) {
- dev_err(core->dev, "local-reset deassert failed, ret = %d\n",
- ret);
- if (ti_sci_proc_power_domain_off(&core->tsp))
- dev_warn(core->dev, "module-reset assert back failed\n");
- }
- return ret;
- }
- static int k3_r5f_prepare(struct udevice *dev)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- struct k3_r5f_cluster *cluster = core->cluster;
- int ret = 0;
- dev_dbg(dev, "%s\n", __func__);
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP)
- ret = k3_r5f_lockstep_release(cluster);
- else
- ret = k3_r5f_split_release(core);
- if (ret)
- dev_err(dev, "Unable to enable cores for TCM loading %d\n",
- ret);
- return ret;
- }
- static int k3_r5f_core_sanity_check(struct k3_r5f_core *core)
- {
- struct k3_r5f_cluster *cluster = core->cluster;
- if (core->in_use) {
- dev_err(dev, "Invalid op: Trying to load/start on already running core %d\n",
- core->tsp.proc_id);
- return -EINVAL;
- }
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP && !cluster->cores[1]) {
- printf("Secondary core is not probed in this cluster\n");
- return -EAGAIN;
- }
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP && !is_primary_core(core)) {
- dev_err(dev, "Invalid op: Trying to start secondary core %d in lockstep mode\n",
- core->tsp.proc_id);
- return -EINVAL;
- }
- if (cluster->mode == CLUSTER_MODE_SPLIT && !is_primary_core(core)) {
- if (!core->cluster->cores[0]->in_use) {
- dev_err(dev, "Invalid seq: Enable primary core before loading secondary core\n");
- return -EINVAL;
- }
- }
- return 0;
- }
- /**
- * k3_r5f_load() - Load up the Remote processor image
- * @dev: rproc device pointer
- * @addr: Address at which image is available
- * @size: size of the image
- *
- * Return: 0 if all goes good, else appropriate error message.
- */
- static int k3_r5f_load(struct udevice *dev, ulong addr, ulong size)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- u32 boot_vector;
- int ret;
- dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);
- ret = k3_r5f_core_sanity_check(core);
- if (ret)
- return ret;
- ret = k3_r5f_proc_request(core);
- if (ret)
- return ret;
- ret = k3_r5f_prepare(dev);
- if (ret) {
- dev_err(dev, "R5f prepare failed for core %d\n",
- core->tsp.proc_id);
- goto proc_release;
- }
- /* Zero out TCMs so that ECC can be effective on all TCM addresses */
- if (core->atcm_enable)
- memset(core->mem[0].cpu_addr, 0x00, core->mem[0].size);
- if (core->btcm_enable)
- memset(core->mem[1].cpu_addr, 0x00, core->mem[1].size);
- ret = rproc_elf_load_image(dev, addr, size);
- if (ret < 0) {
- dev_err(dev, "Loading elf failedi %d\n", ret);
- goto proc_release;
- }
- boot_vector = rproc_elf_get_boot_addr(dev, addr);
- dev_dbg(dev, "%s: Boot vector = 0x%x\n", __func__, boot_vector);
- ret = ti_sci_proc_set_config(&core->tsp, boot_vector, 0, 0);
- proc_release:
- k3_r5f_proc_release(core);
- return ret;
- }
- static int k3_r5f_core_halt(struct k3_r5f_core *core)
- {
- int ret;
- ret = ti_sci_proc_set_control(&core->tsp,
- PROC_BOOT_CTRL_FLAG_R5_CORE_HALT, 0);
- if (ret)
- dev_err(core->dev, "Core %d failed to stop\n",
- core->tsp.proc_id);
- return ret;
- }
- static int k3_r5f_core_run(struct k3_r5f_core *core)
- {
- int ret;
- ret = ti_sci_proc_set_control(&core->tsp,
- 0, PROC_BOOT_CTRL_FLAG_R5_CORE_HALT);
- if (ret) {
- dev_err(core->dev, "Core %d failed to start\n",
- core->tsp.proc_id);
- return ret;
- }
- return 0;
- }
- /**
- * k3_r5f_start() - Start the remote processor
- * @dev: rproc device pointer
- *
- * Return: 0 if all went ok, else return appropriate error
- */
- static int k3_r5f_start(struct udevice *dev)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- struct k3_r5f_cluster *cluster = core->cluster;
- int ret, c;
- dev_dbg(dev, "%s\n", __func__);
- ret = k3_r5f_core_sanity_check(core);
- if (ret)
- return ret;
- ret = k3_r5f_proc_request(core);
- if (ret)
- return ret;
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP) {
- if (is_primary_core(core)) {
- for (c = NR_CORES - 1; c >= 0; c--) {
- ret = k3_r5f_core_run(cluster->cores[c]);
- if (ret)
- goto unroll_core_run;
- }
- } else {
- dev_err(dev, "Invalid op: Trying to start secondary core %d in lockstep mode\n",
- core->tsp.proc_id);
- ret = -EINVAL;
- goto proc_release;
- }
- } else {
- ret = k3_r5f_core_run(core);
- if (ret)
- goto proc_release;
- }
- core->in_use = true;
- k3_r5f_proc_release(core);
- return 0;
- unroll_core_run:
- while (c < NR_CORES) {
- k3_r5f_core_halt(cluster->cores[c]);
- c++;
- }
- proc_release:
- k3_r5f_proc_release(core);
- return ret;
- }
- static int k3_r5f_split_reset(struct k3_r5f_core *core)
- {
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- if (reset_assert(&core->reset))
- ret = -EINVAL;
- if (ti_sci_proc_power_domain_off(&core->tsp))
- ret = -EINVAL;
- return ret;
- }
- static int k3_r5f_lockstep_reset(struct k3_r5f_cluster *cluster)
- {
- int ret = 0, c;
- dev_dbg(dev, "%s\n", __func__);
- for (c = 0; c < NR_CORES; c++)
- if (reset_assert(&cluster->cores[c]->reset))
- ret = -EINVAL;
- /* disable PSC modules on all applicable cores */
- for (c = 0; c < NR_CORES; c++)
- if (ti_sci_proc_power_domain_off(&cluster->cores[c]->tsp))
- ret = -EINVAL;
- return ret;
- }
- static int k3_r5f_unprepare(struct udevice *dev)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- struct k3_r5f_cluster *cluster = core->cluster;
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP) {
- if (is_primary_core(core))
- ret = k3_r5f_lockstep_reset(cluster);
- } else {
- ret = k3_r5f_split_reset(core);
- }
- if (ret)
- dev_warn(dev, "Unable to enable cores for TCM loading %d\n",
- ret);
- return 0;
- }
- static int k3_r5f_stop(struct udevice *dev)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- struct k3_r5f_cluster *cluster = core->cluster;
- int c, ret;
- dev_dbg(dev, "%s\n", __func__);
- ret = k3_r5f_proc_request(core);
- if (ret)
- return ret;
- core->in_use = false;
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP) {
- if (is_primary_core(core)) {
- for (c = 0; c < NR_CORES; c++)
- k3_r5f_core_halt(cluster->cores[c]);
- } else {
- dev_err(dev, "Invalid op: Trying to stop secondary core in lockstep mode\n");
- ret = -EINVAL;
- goto proc_release;
- }
- } else {
- k3_r5f_core_halt(core);
- }
- ret = k3_r5f_unprepare(dev);
- proc_release:
- k3_r5f_proc_release(core);
- return ret;
- }
- static void *k3_r5f_da_to_va(struct udevice *dev, ulong da, ulong size)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- void __iomem *va = NULL;
- phys_addr_t bus_addr;
- u32 dev_addr, offset;
- ulong mem_size;
- int i;
- dev_dbg(dev, "%s\n", __func__);
- if (size <= 0)
- return NULL;
- for (i = 0; i < core->num_mems; i++) {
- bus_addr = core->mem[i].bus_addr;
- dev_addr = core->mem[i].dev_addr;
- mem_size = core->mem[i].size;
- if (da >= bus_addr && (da + size) <= (bus_addr + mem_size)) {
- offset = da - bus_addr;
- va = core->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- if (da >= dev_addr && (da + size) <= (dev_addr + mem_size)) {
- offset = da - dev_addr;
- va = core->mem[i].cpu_addr + offset;
- return (__force void *)va;
- }
- }
- /* Assume it is DDR region and return da */
- return map_physmem(da, size, MAP_NOCACHE);
- }
- static int k3_r5f_init(struct udevice *dev)
- {
- return 0;
- }
- static int k3_r5f_reset(struct udevice *dev)
- {
- return 0;
- }
- static const struct dm_rproc_ops k3_r5f_rproc_ops = {
- .init = k3_r5f_init,
- .reset = k3_r5f_reset,
- .start = k3_r5f_start,
- .stop = k3_r5f_stop,
- .load = k3_r5f_load,
- .device_to_virt = k3_r5f_da_to_va,
- };
- static int k3_r5f_rproc_configure(struct k3_r5f_core *core)
- {
- struct k3_r5f_cluster *cluster = core->cluster;
- u32 set_cfg = 0, clr_cfg = 0, cfg, ctrl, sts;
- bool lockstep_permitted;
- u64 boot_vec = 0;
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- ret = ti_sci_proc_request(&core->tsp);
- if (ret < 0)
- return ret;
- /* Do not touch boot vector now. Load will take care of it. */
- clr_cfg |= PROC_BOOT_CFG_FLAG_GEN_IGN_BOOTVECTOR;
- ret = ti_sci_proc_get_status(&core->tsp, &boot_vec, &cfg, &ctrl, &sts);
- if (ret)
- goto out;
- /* Sanity check for Lockstep mode */
- lockstep_permitted = !!(sts &
- PROC_BOOT_STATUS_FLAG_R5_LOCKSTEP_PERMITTED);
- if (cluster->mode && is_primary_core(core) && !lockstep_permitted) {
- dev_err(core->dev, "LockStep mode not permitted on this device\n");
- ret = -EINVAL;
- goto out;
- }
- /* Primary core only configuration */
- if (is_primary_core(core)) {
- /* always enable ARM mode */
- clr_cfg |= PROC_BOOT_CFG_FLAG_R5_TEINIT;
- if (cluster->mode == CLUSTER_MODE_LOCKSTEP)
- set_cfg |= PROC_BOOT_CFG_FLAG_R5_LOCKSTEP;
- else if (lockstep_permitted)
- clr_cfg |= PROC_BOOT_CFG_FLAG_R5_LOCKSTEP;
- }
- if (core->atcm_enable)
- set_cfg |= PROC_BOOT_CFG_FLAG_R5_ATCM_EN;
- else
- clr_cfg |= PROC_BOOT_CFG_FLAG_R5_ATCM_EN;
- if (core->btcm_enable)
- set_cfg |= PROC_BOOT_CFG_FLAG_R5_BTCM_EN;
- else
- clr_cfg |= PROC_BOOT_CFG_FLAG_R5_BTCM_EN;
- if (core->loczrama)
- set_cfg |= PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE;
- else
- clr_cfg |= PROC_BOOT_CFG_FLAG_R5_TCM_RSTBASE;
- ret = k3_r5f_core_halt(core);
- if (ret)
- goto out;
- ret = ti_sci_proc_set_config(&core->tsp, boot_vec, set_cfg, clr_cfg);
- out:
- ti_sci_proc_release(&core->tsp);
- return ret;
- }
- static int ti_sci_proc_of_to_priv(struct udevice *dev, struct ti_sci_proc *tsp)
- {
- u32 ids[2];
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- tsp->sci = ti_sci_get_by_phandle(dev, "ti,sci");
- if (IS_ERR(tsp->sci)) {
- dev_err(dev, "ti_sci get failed: %ld\n", PTR_ERR(tsp->sci));
- return PTR_ERR(tsp->sci);
- }
- ret = dev_read_u32_array(dev, "ti,sci-proc-ids", ids, 2);
- if (ret) {
- dev_err(dev, "Proc IDs not populated %d\n", ret);
- return ret;
- }
- tsp->ops = &tsp->sci->ops.proc_ops;
- tsp->proc_id = ids[0];
- tsp->host_id = ids[1];
- tsp->dev_id = dev_read_u32_default(dev, "ti,sci-dev-id",
- TI_SCI_RESOURCE_NULL);
- if (tsp->dev_id == TI_SCI_RESOURCE_NULL) {
- dev_err(dev, "Device ID not populated %d\n", ret);
- return -ENODEV;
- }
- return 0;
- }
- static int k3_r5f_of_to_priv(struct k3_r5f_core *core)
- {
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- core->atcm_enable = dev_read_u32_default(core->dev, "atcm-enable", 0);
- core->btcm_enable = dev_read_u32_default(core->dev, "btcm-enable", 1);
- core->loczrama = dev_read_u32_default(core->dev, "loczrama", 1);
- ret = ti_sci_proc_of_to_priv(core->dev, &core->tsp);
- if (ret)
- return ret;
- ret = reset_get_by_index(core->dev, 0, &core->reset);
- if (ret) {
- dev_err(core->dev, "Reset lines not available: %d\n", ret);
- return ret;
- }
- return 0;
- }
- static int k3_r5f_core_of_get_memories(struct k3_r5f_core *core)
- {
- static const char * const mem_names[] = {"atcm", "btcm"};
- struct udevice *dev = core->dev;
- int i;
- dev_dbg(dev, "%s\n", __func__);
- core->num_mems = ARRAY_SIZE(mem_names);
- core->mem = calloc(core->num_mems, sizeof(*core->mem));
- if (!core->mem)
- return -ENOMEM;
- for (i = 0; i < core->num_mems; i++) {
- core->mem[i].bus_addr = dev_read_addr_size_name(dev,
- mem_names[i],
- (fdt_addr_t *)&core->mem[i].size);
- if (core->mem[i].bus_addr == FDT_ADDR_T_NONE) {
- dev_err(dev, "%s bus address not found\n",
- mem_names[i]);
- return -EINVAL;
- }
- core->mem[i].cpu_addr = map_physmem(core->mem[i].bus_addr,
- core->mem[i].size,
- MAP_NOCACHE);
- if (!strcmp(mem_names[i], "atcm")) {
- core->mem[i].dev_addr = core->loczrama ?
- 0 : K3_R5_TCM_DEV_ADDR;
- } else {
- core->mem[i].dev_addr = core->loczrama ?
- K3_R5_TCM_DEV_ADDR : 0;
- }
- dev_dbg(dev, "memory %8s: bus addr %pa size 0x%zx va %p da 0x%x\n",
- mem_names[i], &core->mem[i].bus_addr,
- core->mem[i].size, core->mem[i].cpu_addr,
- core->mem[i].dev_addr);
- }
- return 0;
- }
- /**
- * k3_r5f_probe() - Basic probe
- * @dev: corresponding k3 remote processor device
- *
- * Return: 0 if all goes good, else appropriate error message.
- */
- static int k3_r5f_probe(struct udevice *dev)
- {
- struct k3_r5f_cluster *cluster = dev_get_priv(dev->parent);
- struct k3_r5f_core *core = dev_get_priv(dev);
- bool r_state;
- int ret;
- dev_dbg(dev, "%s\n", __func__);
- core->dev = dev;
- ret = k3_r5f_of_to_priv(core);
- if (ret)
- return ret;
- core->cluster = cluster;
- /* Assume Primary core gets probed first */
- if (!cluster->cores[0])
- cluster->cores[0] = core;
- else
- cluster->cores[1] = core;
- ret = k3_r5f_core_of_get_memories(core);
- if (ret) {
- dev_err(dev, "Rproc getting internal memories failed\n");
- return ret;
- }
- ret = core->tsp.sci->ops.dev_ops.is_on(core->tsp.sci, core->tsp.dev_id,
- &r_state, &core->in_use);
- if (ret)
- return ret;
- if (core->in_use) {
- dev_info(dev, "Core %d is already in use. No rproc commands work\n",
- core->tsp.proc_id);
- return 0;
- }
- /* Make sure Local reset is asserted. Redundant? */
- reset_assert(&core->reset);
- ret = k3_r5f_rproc_configure(core);
- if (ret) {
- dev_err(dev, "rproc configure failed %d\n", ret);
- return ret;
- }
- dev_dbg(dev, "Remoteproc successfully probed\n");
- return 0;
- }
- static int k3_r5f_remove(struct udevice *dev)
- {
- struct k3_r5f_core *core = dev_get_priv(dev);
- free(core->mem);
- ti_sci_proc_release(&core->tsp);
- return 0;
- }
- static const struct udevice_id k3_r5f_rproc_ids[] = {
- { .compatible = "ti,am654-r5f"},
- { .compatible = "ti,j721e-r5f"},
- {}
- };
- U_BOOT_DRIVER(k3_r5f_rproc) = {
- .name = "k3_r5f_rproc",
- .of_match = k3_r5f_rproc_ids,
- .id = UCLASS_REMOTEPROC,
- .ops = &k3_r5f_rproc_ops,
- .probe = k3_r5f_probe,
- .remove = k3_r5f_remove,
- .priv_auto_alloc_size = sizeof(struct k3_r5f_core),
- };
- static int k3_r5f_cluster_probe(struct udevice *dev)
- {
- struct k3_r5f_cluster *cluster = dev_get_priv(dev);
- dev_dbg(dev, "%s\n", __func__);
- cluster->mode = dev_read_u32_default(dev, "lockstep-mode",
- CLUSTER_MODE_LOCKSTEP);
- if (device_get_child_count(dev) != 2) {
- dev_err(dev, "Invalid number of R5 cores");
- return -EINVAL;
- }
- dev_dbg(dev, "%s: Cluster successfully probed in %s mode\n",
- __func__, cluster->mode ? "lockstep" : "split");
- return 0;
- }
- static const struct udevice_id k3_r5fss_ids[] = {
- { .compatible = "ti,am654-r5fss"},
- { .compatible = "ti,j721e-r5fss"},
- {}
- };
- U_BOOT_DRIVER(k3_r5fss) = {
- .name = "k3_r5fss",
- .of_match = k3_r5fss_ids,
- .id = UCLASS_MISC,
- .probe = k3_r5f_cluster_probe,
- .priv_auto_alloc_size = sizeof(struct k3_r5f_cluster),
- .flags = DM_FLAG_DEFAULT_PD_CTRL_OFF,
- };
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