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author | Dong Aisheng <aisheng.dong@nxp.com> | 2021-03-05 21:17:48 +0800 |
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committer | Shawn Guo <shawnguo@kernel.org> | 2021-03-15 12:21:48 +0800 |
commit | 893cfb99734f903cfbfca2d1beb4f3d4d8171932 (patch) | |
tree | ebfc75b0840e04711eb4de788cd2e5ed1f85a9bd /drivers/firmware/imx | |
parent | 1168935b962b240aeaec844855549c2e818fd965 (diff) | |
download | linux-stable-893cfb99734f903cfbfca2d1beb4f3d4d8171932.tar.gz linux-stable-893cfb99734f903cfbfca2d1beb4f3d4d8171932.tar.bz2 linux-stable-893cfb99734f903cfbfca2d1beb4f3d4d8171932.zip |
firmware: imx: scu-pd: do not power off console domain
Do not power off console domain in runtime pm.
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/firmware/imx')
-rw-r--r-- | drivers/firmware/imx/scu-pd.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/firmware/imx/scu-pd.c b/drivers/firmware/imx/scu-pd.c index 08533ee67626..338800d16c65 100644 --- a/drivers/firmware/imx/scu-pd.c +++ b/drivers/firmware/imx/scu-pd.c @@ -86,6 +86,8 @@ struct imx_sc_pd_soc { u8 num_ranges; }; +static int imx_con_rsrc; + static const struct imx_sc_pd_range imx8qxp_scu_pd_ranges[] = { /* LSIO SS */ { "pwm", IMX_SC_R_PWM_0, 8, true, 0 }, @@ -207,6 +209,23 @@ to_imx_sc_pd(struct generic_pm_domain *genpd) return container_of(genpd, struct imx_sc_pm_domain, pd); } +static void imx_sc_pd_get_console_rsrc(void) +{ + struct of_phandle_args specs; + int ret; + + if (!of_stdout) + return; + + ret = of_parse_phandle_with_args(of_stdout, "power-domains", + "#power-domain-cells", + 0, &specs); + if (ret) + return; + + imx_con_rsrc = specs.args[0]; +} + static int imx_sc_pd_power(struct generic_pm_domain *domain, bool power_on) { struct imx_sc_msg_req_set_resource_power_mode msg; @@ -267,6 +286,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx, const struct imx_sc_pd_range *pd_ranges) { struct imx_sc_pm_domain *sc_pd; + bool is_off = true; int ret; if (!imx_sc_rm_is_resource_owned(pm_ipc_handle, pd_ranges->rsrc + idx)) @@ -288,6 +308,10 @@ imx_scu_add_pm_domain(struct device *dev, int idx, "%s", pd_ranges->name); sc_pd->pd.name = sc_pd->name; + if (imx_con_rsrc == sc_pd->rsrc) { + sc_pd->pd.flags = GENPD_FLAG_RPM_ALWAYS_ON; + is_off = false; + } if (sc_pd->rsrc >= IMX_SC_R_LAST) { dev_warn(dev, "invalid pd %s rsrc id %d found", @@ -297,7 +321,7 @@ imx_scu_add_pm_domain(struct device *dev, int idx, return NULL; } - ret = pm_genpd_init(&sc_pd->pd, NULL, true); + ret = pm_genpd_init(&sc_pd->pd, NULL, is_off); if (ret) { dev_warn(dev, "failed to init pd %s rsrc id %d", sc_pd->name, sc_pd->rsrc); @@ -363,6 +387,8 @@ static int imx_sc_pd_probe(struct platform_device *pdev) if (!pd_soc) return -ENODEV; + imx_sc_pd_get_console_rsrc(); + return imx_scu_init_pm_domains(&pdev->dev, pd_soc); } |