From: Adrien Grassein <adrien.grassein@gmail.com> To: unlisted-recipients:; (no To-header on input) Cc: robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, l.stach@pengutronix.de, Anson.Huang@nxp.com, krzk@kernel.org, peng.fan@nxp.com, aisheng.dong@nxp.com, qiangqing.zhang@nxp.com, alice.guo@nxp.com, aford173@gmail.com, agx@sigxcpu.org, andrew.smirnov@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Adrien Grassein <adrien.grassein@gmail.com> Subject: [PATCH v1 6/7] soc: imx: gpcv2: add quirks to domains Date: Wed, 7 Apr 2021 23:21:21 +0200 [thread overview] Message-ID: <20210407212122.626137-7-adrien.grassein@gmail.com> (raw) In-Reply-To: <20210407212122.626137-1-adrien.grassein@gmail.com> Some domains need quirks during their operation. For example, on i.MX8MM, USB domains should not be powered off. Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com> --- drivers/soc/imx/gpcv2.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index 571d0381dd87..592b9808dcd4 100644 --- a/drivers/soc/imx/gpcv2.c +++ b/drivers/soc/imx/gpcv2.c @@ -119,6 +119,10 @@ #define GPC_CLK_MAX 6 +/* Quirks */ +//Refuse to poweroff the domain +#define GPC_QUIRKS_DONT_POWEROFF BIT(0) + static DEFINE_MUTEX(gpc_pd_mutex); struct imx_pgc_domain { @@ -139,6 +143,7 @@ struct imx_pgc_domain { const int voltage; struct device *dev; + const unsigned int quirks; }; struct imx_pgc_domain_data { @@ -263,6 +268,9 @@ static int imx_gpc_pu_pgc_sw_pdn_req(struct generic_pm_domain *genpd) int i, ret = 0; u32 value; + if (domain->quirks & GPC_QUIRKS_DONT_POWEROFF) + return 0; + mutex_lock(&gpc_pd_mutex); /* Enable reset clocks for all devices in the domain */ @@ -606,6 +614,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = { .map = IMX8MM_OTG1_A53_DOMAIN, }, .pgc = IMX8MM_PGC_OTG1, + .quirks = GPC_QUIRKS_DONT_POWEROFF, }, [IMX8MM_POWER_DOMAIN_USB_OTG2] = { @@ -617,6 +626,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = { .map = IMX8MM_OTG2_A53_DOMAIN, }, .pgc = IMX8MM_PGC_OTG2, + .quirks = GPC_QUIRKS_DONT_POWEROFF, }, }; -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Adrien Grassein <adrien.grassein@gmail.com> Cc: robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, l.stach@pengutronix.de, Anson.Huang@nxp.com, krzk@kernel.org, peng.fan@nxp.com, aisheng.dong@nxp.com, qiangqing.zhang@nxp.com, alice.guo@nxp.com, aford173@gmail.com, agx@sigxcpu.org, andrew.smirnov@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Adrien Grassein <adrien.grassein@gmail.com> Subject: [PATCH v1 6/7] soc: imx: gpcv2: add quirks to domains Date: Wed, 7 Apr 2021 23:21:21 +0200 [thread overview] Message-ID: <20210407212122.626137-7-adrien.grassein@gmail.com> (raw) In-Reply-To: <20210407212122.626137-1-adrien.grassein@gmail.com> Some domains need quirks during their operation. For example, on i.MX8MM, USB domains should not be powered off. Signed-off-by: Adrien Grassein <adrien.grassein@gmail.com> --- drivers/soc/imx/gpcv2.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index 571d0381dd87..592b9808dcd4 100644 --- a/drivers/soc/imx/gpcv2.c +++ b/drivers/soc/imx/gpcv2.c @@ -119,6 +119,10 @@ #define GPC_CLK_MAX 6 +/* Quirks */ +//Refuse to poweroff the domain +#define GPC_QUIRKS_DONT_POWEROFF BIT(0) + static DEFINE_MUTEX(gpc_pd_mutex); struct imx_pgc_domain { @@ -139,6 +143,7 @@ struct imx_pgc_domain { const int voltage; struct device *dev; + const unsigned int quirks; }; struct imx_pgc_domain_data { @@ -263,6 +268,9 @@ static int imx_gpc_pu_pgc_sw_pdn_req(struct generic_pm_domain *genpd) int i, ret = 0; u32 value; + if (domain->quirks & GPC_QUIRKS_DONT_POWEROFF) + return 0; + mutex_lock(&gpc_pd_mutex); /* Enable reset clocks for all devices in the domain */ @@ -606,6 +614,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = { .map = IMX8MM_OTG1_A53_DOMAIN, }, .pgc = IMX8MM_PGC_OTG1, + .quirks = GPC_QUIRKS_DONT_POWEROFF, }, [IMX8MM_POWER_DOMAIN_USB_OTG2] = { @@ -617,6 +626,7 @@ static const struct imx_pgc_domain imx8mm_pgc_domains[] = { .map = IMX8MM_OTG2_A53_DOMAIN, }, .pgc = IMX8MM_PGC_OTG2, + .quirks = GPC_QUIRKS_DONT_POWEROFF, }, }; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-04-07 21:22 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-07 21:21 [PATCH v1 0/7] imx-gpcv2 improvements Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 1/7] soc: imx: gpcv2: check for errors when r/w registers Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-12 17:16 ` Andrey Smirnov 2021-04-12 17:16 ` Andrey Smirnov 2021-04-07 21:21 ` [PATCH v1 2/7] soc: imx: gpcv2: Fix power up/down sequence Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 3/7] soc: imx: gpcv2: allow domains without power sequence control Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 4/7] dt-bindings: power: fsl,imx-gpcv2: add definitions for i.MX8MM Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 4/7] dt-bindings: power: fsl, imx-gpcv2: " Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 5/7] soc: imx: gpcv2: add HSIOMIX and USB domains " Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein [this message] 2021-04-07 21:21 ` [PATCH v1 6/7] soc: imx: gpcv2: add quirks to domains Adrien Grassein 2021-04-07 21:21 ` [PATCH v1 7/7] arm64: dts: imx8mm: add power-domains Adrien Grassein 2021-04-07 21:21 ` Adrien Grassein 2021-04-07 22:13 ` [PATCH v1 0/7] imx-gpcv2 improvements Lucas Stach 2021-04-07 22:13 ` Lucas Stach 2021-04-07 23:03 ` Adam Ford 2021-04-07 23:03 ` Adam Ford 2021-04-08 1:27 ` Peng Fan (OSS) 2021-04-08 1:27 ` Peng Fan (OSS) 2021-04-09 13:36 ` Adam Ford 2021-04-09 13:36 ` Adam Ford
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