[PATCH V2 5/8] remoteproc: imx_rproc: parse fsl,auto-boot
From: <hidden>
Date: 2021-03-30 09:28:20
Also in:
linux-devicetree, linux-remoteproc, lkml
Subsystem:
remote processor (remoteproc) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
From: Peng Fan <peng.fan@nxp.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@nxp.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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