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remoteproc: k3-dsp: Avoid reloading of firmware

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DSP core is going into abnormal state when load callback is called
after starting of DSP core.
Reload of firmware needs core to be stopped first, followed by
load.
So avoid loading of firmware, when core is started.

Signed-off-by: Udit Kumar <u-kumar1@ti.com>
This commit is contained in:
Udit Kumar 2023-11-25 23:59:39 +05:30 • committed by Tom Rini
parent c86c1d0383
commit 34fc186123
1 changed files with 11 additions and 0 deletions
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11
drivers/remoteproc/ti_k3_dsp_rproc.c
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@ -56,6 +56,7 @@ struct k3_dsp_boot_data {
* @data: Pointer to DSP specific boot data structure
* @mem: Array of available memories
* @num_mem: Number of available memories
* @in_use: flag to tell if the core is already in use.
*/
struct k3_dsp_privdata {
struct reset_ctl dsp_rst;
@ -63,6 +64,7 @@ struct k3_dsp_privdata {
struct k3_dsp_boot_data *data;
struct k3_dsp_mem *mem;
int num_mems;
bool in_use;
};
/*
@ -128,6 +130,13 @@ static int k3_dsp_load(struct udevice *dev, ulong addr, ulong size)
u32 boot_vector;
int ret;
if (dsp->in_use) {
dev_err(dev,
"Invalid op: Trying to load/start on already running core %d\n",
dsp->tsp.proc_id);
return -EINVAL;
}
dev_dbg(dev, "%s addr = 0x%lx, size = 0x%lx\n", __func__, addr, size);
ret = ti_sci_proc_request(&dsp->tsp);
if (ret)
@ -195,6 +204,7 @@ static int k3_dsp_start(struct udevice *dev)
ti_sci_proc_power_domain_off(&dsp->tsp);
}
dsp->in_use = true;
proc_release:
ti_sci_proc_release(&dsp->tsp);
@ -207,6 +217,7 @@ static int k3_dsp_stop(struct udevice *dev)
dev_dbg(dev, "%s\n", __func__);
dsp->in_use = false;
ti_sci_proc_request(&dsp->tsp);
reset_assert(&dsp->dsp_rst);
ti_sci_proc_power_domain_off(&dsp->tsp);