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Message-Id: <1617846898-13662-6-git-send-email-peng.fan@oss.nxp.com>
Date: Thu, 8 Apr 2021 09:54:55 +0800
From: peng.fan@....nxp.com
To: ohad@...ery.com, bjorn.andersson@...aro.org,
mathieu.poirier@...aro.org, o.rempel@...gutronix.de,
robh+dt@...nel.org, devicetree@...r.kernel.org
Cc: shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
festevam@...il.com, linux-remoteproc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Peng Fan <peng.fan@....com>
Subject: [PATCH V3 5/8] remoteproc: imx_rproc: parse fsl,auto-boot
From: Peng Fan <peng.fan@....com>
Parse fsl,auto-boot to indicate whether need remoteproc framework
auto boot or not.
When remote processor is booted before Linux Kernel up, do not parse
fsl,auto-boot. So add an entry to store the working mode of remote
processor. Currently only IMX_RPROC_NORMAL, IMX_RPROC_EARLY_BOOT.
Signed-off-by: Peng Fan <peng.fan@....com>
---
drivers/remoteproc/imx_rproc.c | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index ca17f520d904..c576e12d3817 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -83,6 +83,16 @@ struct imx_rproc_dcfg {
size_t att_size;
};
+enum imx_rproc_mode {
+ /* Linux load/kick remote core */
+ IMX_RPROC_NORMAL,
+ /*
+ * remote core booted before kicking Linux, and remote core
+ * could be stopped & restarted by Linux
+ */
+ IMX_RPROC_EARLY_BOOT,
+};
+
struct imx_rproc {
struct device *dev;
struct regmap *regmap;
@@ -96,6 +106,7 @@ struct imx_rproc {
struct work_struct rproc_work;
struct workqueue_struct *workqueue;
void __iomem *rsc_table;
+ enum imx_rproc_mode mode;
};
static const struct imx_rproc_att imx_rproc_att_imx8mq[] = {
@@ -565,14 +576,18 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv)
int ret;
u32 val;
+ priv->mode = IMX_RPROC_NORMAL;
+
ret = regmap_read(priv->regmap, dcfg->src_reg, &val);
if (ret) {
dev_err(dev, "Failed to read src\n");
return ret;
}
- if (!(val & dcfg->src_stop))
+ if (!(val & dcfg->src_stop)) {
+ priv->mode = IMX_RPROC_EARLY_BOOT;
priv->rproc->state = RPROC_DETACHED;
+ }
return 0;
}
@@ -654,6 +669,9 @@ static int imx_rproc_probe(struct platform_device *pdev)
INIT_WORK(&priv->rproc_work, imx_rproc_vq_work);
+ if (priv->mode == IMX_RPROC_NORMAL)
+ rproc->auto_boot = of_property_read_bool(np, "fsl,auto-boot");
+
ret = rproc_add(rproc);
if (ret) {
dev_err(dev, "rproc_add failed\n");
--
2.30.0
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