remoteproc: stm32: clear MCU PDDS at firmware start (abbe429d) · Commits · 戴 / test

When remoteproc stops a firmware, it sets the MCU PDDS flag, allowing the platform to reach the Standby power mode if needed. Symmetrically, clear this flag before running a firmware. This fixes the issue where the system goes to Standby mode when the MCU crashes while MPU is in CSTOP mode. Signed-off-by:

Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by:

Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/stm32_rproc.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -383,10 +383,21 @@ static void stm32_rproc_add_coredump_trace(struct rproc *rproc)

		static int stm32_rproc_start(struct rproc *rproc)
		{
		struct stm32_rproc *ddata = rproc->priv;
		int err;

		stm32_rproc_add_coredump_trace(rproc);

		/* clear remote proc Deep Sleep */
		if (ddata->pdds.map) {
		err = regmap_update_bits(ddata->pdds.map, ddata->pdds.reg,
		ddata->pdds.mask, 0);
		if (err) {
		dev_err(&rproc->dev, "failed to clear pdds\n");
		return err;
		}
		}

		err = stm32_rproc_set_hold_boot(rproc, false);
		if (err)
		return err;

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