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[2a01:cb00:8bd:2700:41a0:a0f4:308e:afc0]) by smtp.gmail.com with ESMTPSA id l14sm17173952wrm.77.2021.04.07.14.21.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Apr 2021 14:21:32 -0700 (PDT) From: Adrien Grassein 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 Subject: [PATCH v1 6/7] soc: imx: gpcv2: add quirks to domains Date: Wed, 7 Apr 2021 23:21:21 +0200 Message-Id: <20210407212122.626137-7-adrien.grassein@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210407212122.626137-1-adrien.grassein@gmail.com> References: <20210407212122.626137-1-adrien.grassein@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some domains need quirks during their operation. For example, on i.MX8MM, USB domains should not be powered off. Signed-off-by: Adrien Grassein --- 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