diff options
| author | Peng Fan <[email protected]> | 2023-08-14 18:41:23 +0800 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2023-08-17 11:33:54 +0200 |
| commit | 309864dcf92b76fc601a579adf9eb389e4ca4c5c (patch) | |
| tree | 55df719a0bbbd261b1644de968ee6a9afc316b03 | |
| parent | a67d780720ff406943d56286bc06aa60c2b59d3a (diff) | |
genpd: imx: scu-pd: do not power off console if no_console_suspend
Do not power off console if no_console_suspend, this will leave
the serial device's corresponding PM domain on during system suspend,
which is useful for debug system suspend.
Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
| -rw-r--r-- | drivers/genpd/imx/scu-pd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/genpd/imx/scu-pd.c b/drivers/genpd/imx/scu-pd.c index 08583a10ac62..d69da79d3130 100644 --- a/drivers/genpd/imx/scu-pd.c +++ b/drivers/genpd/imx/scu-pd.c @@ -52,6 +52,7 @@ */ #include <dt-bindings/firmware/imx/rsrc.h> +#include <linux/console.h> #include <linux/firmware/imx/sci.h> #include <linux/firmware/imx/svc/rm.h> #include <linux/io.h> @@ -324,6 +325,10 @@ static int imx_sc_pd_power(struct generic_pm_domain *domain, bool power_on) msg.resource = pd->rsrc; msg.mode = power_on ? IMX_SC_PM_PW_MODE_ON : IMX_SC_PM_PW_MODE_LP; + /* keep uart console power on for no_console_suspend */ + if (imx_con_rsrc == pd->rsrc && !console_suspend_enabled && !power_on) + return -EBUSY; + ret = imx_scu_call_rpc(pm_ipc_handle, &msg, true); if (ret) dev_err(&domain->dev, "failed to power %s resource %d ret %d\n", |