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MLK-23754-12 remoteproc: imx_proc: add ipc-only support 

ipc-only is different from early-booted. You could still stop/start
the early-booted remote processors, but you could not stop/start
the remote processor that only support IPC.

Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2020-03-25 14:21:47 +08:00
parent a2fac0fbd3
commit c99efe4d56
1 changed files with 16 additions and 1 deletions
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17
drivers/remoteproc/imx_rproc.c
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@ -91,6 +91,7 @@ struct imx_rproc {
const struct imx_rproc_dcfg *dcfg;
struct imx_rproc_mem mem[IMX7D_RPROC_MEM_MAX];
struct clk *clk;
bool ipc_only;
bool early_boot;
void *rsc_va;
};
@ -171,6 +172,11 @@ static int imx_rproc_start(struct rproc *rproc)
int ret;
u32 val;
if (priv->ipc_only) {
dev_info(dev, "%s: IPC only\n", __func__);
return 0;
}
if (priv->enable) {
if (!reset_control_status(priv->enable)) {
dev_info(dev, "alreay started\n");
@ -207,6 +213,11 @@ static int imx_rproc_stop(struct rproc *rproc)
struct device *dev = priv->dev;
int ret;
if (priv->ipc_only) {
dev_info(dev, "%s: IPC only\n", __func__);
return -EBUSY;
}
if (priv->enable) {
ret = reset_control_assert(priv->enable);
if (!ret)
@ -523,7 +534,11 @@ static int imx_rproc_configure_mode(struct imx_rproc *priv)
int ret;
u32 val;
if (of_get_property(dev->of_node, "early-booted", NULL)) {
if (of_get_property(dev->of_node, "ipc-only", NULL)) {
priv->ipc_only = true;
priv->early_boot = true;
priv->rproc->skip_fw_load_recovery = true;
} else if (of_get_property(dev->of_node, "early-booted", NULL)) {
priv->early_boot = true;
} else {
ret = regmap_read(priv->regmap, dcfg->src_reg, &val);