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From: Conor Dooley <conor@kernel.org>
To: Xu Yilun <yilun.xu@intel.com>, conor@kernel.org
Cc: Conor Dooley <conor.dooley@microchip.com>,
	Daire McNamara <daire.mcnamara@microchip.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Moritz Fischer <mdf@kernel.org>, Wu Hao <hao.wu@intel.com>,
	Tom Rix <trix@redhat.com>,
	linux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-fpga@vger.kernel.org
Subject: [PATCH v1 4/6] soc: microchip: mpfs: add auto-update subdev to system controller
Date: Fri, 17 Feb 2023 16:40:21 +0000	[thread overview]
Message-ID: <20230217164023.14255-5-conor@kernel.org> (raw)
In-Reply-To: <20230217164023.14255-1-conor@kernel.org>

From: Conor Dooley <conor.dooley@microchip.com>

The PolarFire SoC's system controller offers the ability to re-program
the FPGA from a user application via two, related, mechanisms.
In-Application Programming (IAP) is not ideal for use in Linux, as it
will immediately take down the system when requested. Auto Update is
preferred, as it will only take affect at device power up*, allowing the
OS (and potential applications in AMP) to be shut down gracefully.

* Auto Update occurs at device initialisation, which can also be
  triggered by device reset - possible with the v2023.02 version of the
  Hart Software Services (HSS) and reference design.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
 drivers/soc/microchip/mpfs-sys-controller.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/microchip/mpfs-sys-controller.c b/drivers/soc/microchip/mpfs-sys-controller.c
index bcbb4bab09e5..223eec66edf9 100644
--- a/drivers/soc/microchip/mpfs-sys-controller.c
+++ b/drivers/soc/microchip/mpfs-sys-controller.c
@@ -114,7 +114,11 @@ static struct platform_device subdevs[] = {
 	{
 		.name		= "mpfs-generic-service",
 		.id		= -1,
-	}
+	},
+	{
+		.name		= "mpfs-auto-update",
+		.id		= -1,
+	},
 };
 
 static int mpfs_sys_controller_probe(struct platform_device *pdev)
@@ -156,7 +160,6 @@ static int mpfs_sys_controller_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, sys_controller);
 
-	dev_info(&pdev->dev, "Registered MPFS system controller\n");
 
 	for (i = 0; i < ARRAY_SIZE(subdevs); i++) {
 		subdevs[i].dev.parent = dev;
@@ -164,6 +167,8 @@ static int mpfs_sys_controller_probe(struct platform_device *pdev)
 			dev_warn(dev, "Error registering sub device %s\n", subdevs[i].name);
 	}
 
+	dev_info(&pdev->dev, "Registered MPFS system controller\n");
+
 	return 0;
 }
 
-- 
2.39.1


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  parent reply	other threads:[~2023-02-17 16:41 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-17 16:40 [PATCH v1 0/6] PolarFire SoC Auto Update Support Conor Dooley
2023-02-17 16:40 ` [PATCH v1 1/6] soc: microchip: mpfs: add a prefix to rx_callback() Conor Dooley
2023-02-17 16:40 ` [PATCH v1 2/6] dt-bindings: soc: microchip: add a property for system controller flash Conor Dooley
2023-02-26 18:01   ` Rob Herring
2023-02-17 16:40 ` [PATCH v1 3/6] soc: microchip: mpfs: enable access to the system controller's flash Conor Dooley
2023-02-17 16:40 ` Conor Dooley [this message]
2023-02-17 16:40 ` [PATCH v1 5/6] fpga: add PolarFire SoC Auto Update support Conor Dooley
2023-03-04 16:38   ` Xu Yilun
2023-03-04 17:01     ` Conor Dooley
2023-02-17 16:40 ` [PATCH v1 6/6] riscv: dts: microchip: add the mpfs' system controller qspi & associated flash Conor Dooley
2023-02-24  7:57 ` [PATCH v1 0/6] PolarFire SoC Auto Update Support Xu Yilun
2023-02-24  8:28   ` Conor Dooley
2023-02-27 22:04     ` Russ Weight
2023-02-27 22:16       ` Conor Dooley
2023-02-27 22:42         ` Russ Weight
2023-02-27 22:56           ` Conor Dooley
2023-03-22 18:51             ` Conor Dooley
2023-03-30  0:11               ` Russ Weight

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