From: Dmitry Osipenko <digetx@gmail.com>
To: "Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Ulf Hansson" <ulf.hansson@linaro.org>,
"Viresh Kumar" <vireshk@kernel.org>,
"Stephen Boyd" <sboyd@kernel.org>,
"Peter De Schrijver" <pdeschrijver@nvidia.com>,
"Mikko Perttunen" <mperttunen@nvidia.com>,
"Peter Chen" <peter.chen@kernel.org>,
"Mark Brown" <broonie@kernel.org>,
"Lee Jones" <lee.jones@linaro.org>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Nishanth Menon" <nm@ti.com>,
"Vignesh Raghavendra" <vigneshr@ti.com>,
"Richard Weinberger" <richard@nod.at>,
"Miquel Raynal" <miquel.raynal@bootlin.com>,
"Lucas Stach" <dev@lynxeye.de>, "Stefan Agner" <stefan@agner.ch>,
"Adrian Hunter" <adrian.hunter@intel.com>,
"Mauro Carvalho Chehab" <mchehab@kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Michael Turquette" <mturquette@baylibre.com>
Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-pm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-staging@lists.linux.dev, linux-spi@vger.kernel.org,
linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org,
linux-mmc@vger.kernel.org, linux-media@vger.kernel.org,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-clk@vger.kernel.org
Subject: [PATCH v11 25/34] soc/tegra: fuse: Reset hardware
Date: Sun, 12 Sep 2021 23:08:23 +0300 [thread overview]
Message-ID: <20210912200832.12312-26-digetx@gmail.com> (raw)
In-Reply-To: <20210912200832.12312-1-digetx@gmail.com>
The FUSE controller is enabled at a boot time. Reset it in order to put
hardware and clock into clean and disabled state.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/soc/tegra/fuse/fuse-tegra.c | 25 +++++++++++++++++++++++++
drivers/soc/tegra/fuse/fuse.h | 1 +
2 files changed, 26 insertions(+)
diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c
index f2151815db58..cc032729a143 100644
--- a/drivers/soc/tegra/fuse/fuse-tegra.c
+++ b/drivers/soc/tegra/fuse/fuse-tegra.c
@@ -14,6 +14,7 @@
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
+#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
@@ -243,6 +244,30 @@ static int tegra_fuse_probe(struct platform_device *pdev)
goto restore;
}
+ fuse->rst = devm_reset_control_get_optional(&pdev->dev, "fuse");
+ if (IS_ERR(fuse->rst)) {
+ err = PTR_ERR(fuse->rst);
+ dev_err(&pdev->dev, "failed to get FUSE reset: %pe\n",
+ fuse->rst);
+ goto restore;
+ }
+
+ /*
+ * FUSE clock is enabled at a boot time, hence this resume/suspend
+ * disables the clock besides the h/w resetting.
+ */
+ err = pm_runtime_resume_and_get(&pdev->dev);
+ if (err)
+ goto restore;
+
+ err = reset_control_reset(fuse->rst);
+ pm_runtime_put(&pdev->dev);
+
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to reset FUSE: %d\n", err);
+ goto restore;
+ }
+
/* release the early I/O memory mapping */
iounmap(base);
diff --git a/drivers/soc/tegra/fuse/fuse.h b/drivers/soc/tegra/fuse/fuse.h
index de58feba0435..1b719d85bd04 100644
--- a/drivers/soc/tegra/fuse/fuse.h
+++ b/drivers/soc/tegra/fuse/fuse.h
@@ -43,6 +43,7 @@ struct tegra_fuse {
void __iomem *base;
phys_addr_t phys;
struct clk *clk;
+ struct reset_control *rst;
u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
--
2.32.0
next prev parent reply other threads:[~2021-09-12 20:13 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-12 20:07 [PATCH v11 00/34] NVIDIA Tegra power management patches for 5.16 Dmitry Osipenko
2021-09-12 20:07 ` [PATCH v11 01/34] opp: Change type of dev_pm_opp_attach_genpd(names) argument Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 02/34] soc/tegra: Add devm_tegra_core_dev_init_opp_table_common() Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 03/34] soc/tegra: pmc: Disable PMC state syncing Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 04/34] soc/tegra: Don't print error message when OPPs not available Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 05/34] dt-bindings: clock: tegra-car: Document new clock sub-nodes Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 06/34] clk: tegra: Support runtime PM and power domain Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 07/34] dt-bindings: host1x: Document OPP and power domain properties Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 08/34] dt-bindings: host1x: Document Memory Client resets of Host1x, GR2D and GR3D Dmitry Osipenko
2021-09-16 19:49 ` Rob Herring
2021-09-12 20:08 ` [PATCH v11 09/34] gpu: host1x: Add runtime PM and OPP support Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 10/34] gpu: host1x: Add host1x_channel_stop() Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 11/34] drm/tegra: dc: Support OPP and SoC core voltage scaling Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 12/34] drm/tegra: hdmi: Add OPP support Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 13/34] drm/tegra: gr2d: Support generic power domain and runtime PM Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 14/34] drm/tegra: gr3d: " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 15/34] drm/tegra: vic: Support system suspend Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 16/34] usb: chipidea: tegra: Add runtime PM and OPP support Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 17/34] bus: tegra-gmi: " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 18/34] pwm: tegra: " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 19/34] mmc: sdhci-tegra: " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 20/34] mtd: rawnand: tegra: " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 21/34] spi: tegra20-slink: Add " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 22/34] media: dt: bindings: tegra-vde: Convert to schema Dmitry Osipenko
2021-09-13 10:36 ` Hans Verkuil
2021-09-12 20:08 ` [PATCH v11 23/34] media: dt: bindings: tegra-vde: Document OPP and power domain Dmitry Osipenko
2021-09-13 10:36 ` Hans Verkuil
2021-09-12 20:08 ` [PATCH v11 24/34] media: staging: tegra-vde: Support generic " Dmitry Osipenko
2021-09-13 10:37 ` Hans Verkuil
2021-09-12 20:08 ` Dmitry Osipenko [this message]
2021-09-12 20:08 ` [PATCH v11 26/34] soc/tegra: fuse: Use resource-managed helpers Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 27/34] soc/tegra: regulators: Prepare for suspend Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 28/34] soc/tegra: pmc: Change name of core power domain Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 29/34] soc/tegra: pmc: Enable core domain support for Tegra20 and Tegra30 Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 30/34] ARM: tegra: Add OPP tables and power domains to Tegra20 device-trees Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 31/34] ARM: tegra: Add OPP tables and power domains to Tegra30 device-trees Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 32/34] ARM: tegra: Add Memory Client resets to Tegra20 GR2D, GR3D and Host1x Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 33/34] ARM: tegra: Add Memory Client resets to Tegra30 " Dmitry Osipenko
2021-09-12 20:08 ` [PATCH v11 34/34] ARM: tegra20/30: Disable unused host1x hardware Dmitry Osipenko
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