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
next prev parent reply other threads:[~2021-04-07 21:22 UTC|newest]
Thread overview: 13+ 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 ` [PATCH v1 1/7] soc: imx: gpcv2: check for errors when r/w registers Adrien Grassein
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 ` [PATCH v1 3/7] soc: imx: gpcv2: allow domains without power sequence control 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 5/7] soc: imx: gpcv2: add HSIOMIX and USB domains " Adrien Grassein
2021-04-07 21:21 ` Adrien Grassein [this message]
2021-04-07 21:21 ` [PATCH v1 7/7] arm64: dts: imx8mm: add power-domains Adrien Grassein
2021-04-07 22:13 ` [PATCH v1 0/7] imx-gpcv2 improvements Lucas Stach
2021-04-07 23:03 ` Adam Ford
2021-04-08 1:27 ` Peng Fan (OSS)
2021-04-09 13:36 ` Adam Ford
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