From: Stefan Wahren <stefan.wahren@i2se.com> To: Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, Nicolas Saenz Julienne <nsaenz@kernel.org>, Lee Jones <lee.jones@linaro.org> Cc: Peter Robinson <pbrobinson@gmail.com>, Melissa Wen <melissa.srw@gmail.com>, Phil Elwell <phil@raspberrypi.com>, bcm-kernel-feedback-list@broadcom.com, Maxime Ripard <maxime@cerno.tech>, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Stefan Wahren <stefan.wahren@i2se.com> Subject: [PATCH V2 07/11] mfd: bcm2835-pm: Add support for BCM2711 Date: Wed, 1 Jun 2022 14:53:40 +0200 [thread overview] Message-ID: <20220601125344.60602-8-stefan.wahren@i2se.com> (raw) In-Reply-To: <20220601125344.60602-1-stefan.wahren@i2se.com> In BCM2711 the new RPiVid ASB took over V3D. The old ASB is still present with the ISP and H264 bits, and V3D is in the same place in the new ASB as the old one. As per the devicetree bindings, BCM2711 will provide both the old and new ASB resources, so get both of them and pass them into 'bcm2835-power,' which will take care of selecting which one to use accordingly. Since the RPiVid ASB's resources were being provided prior to formalizing the bindings[1], also support the old DT files that didn't use 'reg-names.' Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> [1] See: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support") --- drivers/mfd/bcm2835-pm.c | 21 +++++++++++++++++++++ include/linux/mfd/bcm2835-pm.h | 1 + 2 files changed, 22 insertions(+) diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c index c1e81a4541d7..e65aee6f9b84 100644 --- a/drivers/mfd/bcm2835-pm.c +++ b/drivers/mfd/bcm2835-pm.c @@ -28,6 +28,8 @@ static const struct mfd_cell bcm2835_power_devs[] = { static int bcm2835_pm_get_pdata(struct platform_device *pdev, struct bcm2835_pm *pm) { + bool is_bcm2711 = of_device_is_compatible(pm->dev->of_node, "brcm,bcm2711-pm"); + /* If no 'reg-names' property is found we can assume we're using old * firmware. */ @@ -39,6 +41,7 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev, return PTR_ERR(pm->base); pm->asb = devm_platform_ioremap_resource(pdev, 1); + pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 2); } else { struct resource *res; @@ -50,11 +53,28 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev, "asb"); if (res) pm->asb = devm_ioremap_resource(&pdev->dev, res); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "rpivid_asb"); + if (res) + pm->rpivid_asb = devm_ioremap_resource(&pdev->dev, + res); } if (IS_ERR(pm->asb)) pm->asb = NULL; + if (IS_ERR(pm->rpivid_asb)) + pm->rpivid_asb = NULL; + + /* Ensure that rpivid_asb is set only for BCM2711, so subsequent + * driver can rely on this and don't get confused by broken DTB. + */ + if (pm->rpivid_asb && !is_bcm2711) { + dev_err(pm->dev, "Unexpected rpivid_asb register, please fix your DTB.\n"); + return -EINVAL; + } + return 0; } @@ -95,6 +115,7 @@ static int bcm2835_pm_probe(struct platform_device *pdev) static const struct of_device_id bcm2835_pm_of_match[] = { { .compatible = "brcm,bcm2835-pm-wdt", }, { .compatible = "brcm,bcm2835-pm", }, + { .compatible = "brcm,bcm2711-pm", }, {}, }; MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match); diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h index ed37dc40e82a..f70a810c55f7 100644 --- a/include/linux/mfd/bcm2835-pm.h +++ b/include/linux/mfd/bcm2835-pm.h @@ -9,6 +9,7 @@ struct bcm2835_pm { struct device *dev; void __iomem *base; void __iomem *asb; + void __iomem *rpivid_asb; }; #endif /* BCM2835_MFD_PM_H */ -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Stefan Wahren <stefan.wahren@i2se.com> To: Florian Fainelli <f.fainelli@gmail.com>, Ray Jui <rjui@broadcom.com>, Scott Branden <sbranden@broadcom.com>, Nicolas Saenz Julienne <nsaenz@kernel.org>, Lee Jones <lee.jones@linaro.org> Cc: Peter Robinson <pbrobinson@gmail.com>, Melissa Wen <melissa.srw@gmail.com>, Phil Elwell <phil@raspberrypi.com>, bcm-kernel-feedback-list@broadcom.com, Maxime Ripard <maxime@cerno.tech>, devicetree@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Stefan Wahren <stefan.wahren@i2se.com> Subject: [PATCH V2 07/11] mfd: bcm2835-pm: Add support for BCM2711 Date: Wed, 1 Jun 2022 14:53:40 +0200 [thread overview] Message-ID: <20220601125344.60602-8-stefan.wahren@i2se.com> (raw) In-Reply-To: <20220601125344.60602-1-stefan.wahren@i2se.com> In BCM2711 the new RPiVid ASB took over V3D. The old ASB is still present with the ISP and H264 bits, and V3D is in the same place in the new ASB as the old one. As per the devicetree bindings, BCM2711 will provide both the old and new ASB resources, so get both of them and pass them into 'bcm2835-power,' which will take care of selecting which one to use accordingly. Since the RPiVid ASB's resources were being provided prior to formalizing the bindings[1], also support the old DT files that didn't use 'reg-names.' Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> [1] See: 7dbe8c62ceeb ("ARM: dts: Add minimal Raspberry Pi 4 support") --- drivers/mfd/bcm2835-pm.c | 21 +++++++++++++++++++++ include/linux/mfd/bcm2835-pm.h | 1 + 2 files changed, 22 insertions(+) diff --git a/drivers/mfd/bcm2835-pm.c b/drivers/mfd/bcm2835-pm.c index c1e81a4541d7..e65aee6f9b84 100644 --- a/drivers/mfd/bcm2835-pm.c +++ b/drivers/mfd/bcm2835-pm.c @@ -28,6 +28,8 @@ static const struct mfd_cell bcm2835_power_devs[] = { static int bcm2835_pm_get_pdata(struct platform_device *pdev, struct bcm2835_pm *pm) { + bool is_bcm2711 = of_device_is_compatible(pm->dev->of_node, "brcm,bcm2711-pm"); + /* If no 'reg-names' property is found we can assume we're using old * firmware. */ @@ -39,6 +41,7 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev, return PTR_ERR(pm->base); pm->asb = devm_platform_ioremap_resource(pdev, 1); + pm->rpivid_asb = devm_platform_ioremap_resource(pdev, 2); } else { struct resource *res; @@ -50,11 +53,28 @@ static int bcm2835_pm_get_pdata(struct platform_device *pdev, "asb"); if (res) pm->asb = devm_ioremap_resource(&pdev->dev, res); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + "rpivid_asb"); + if (res) + pm->rpivid_asb = devm_ioremap_resource(&pdev->dev, + res); } if (IS_ERR(pm->asb)) pm->asb = NULL; + if (IS_ERR(pm->rpivid_asb)) + pm->rpivid_asb = NULL; + + /* Ensure that rpivid_asb is set only for BCM2711, so subsequent + * driver can rely on this and don't get confused by broken DTB. + */ + if (pm->rpivid_asb && !is_bcm2711) { + dev_err(pm->dev, "Unexpected rpivid_asb register, please fix your DTB.\n"); + return -EINVAL; + } + return 0; } @@ -95,6 +115,7 @@ static int bcm2835_pm_probe(struct platform_device *pdev) static const struct of_device_id bcm2835_pm_of_match[] = { { .compatible = "brcm,bcm2835-pm-wdt", }, { .compatible = "brcm,bcm2835-pm", }, + { .compatible = "brcm,bcm2711-pm", }, {}, }; MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match); diff --git a/include/linux/mfd/bcm2835-pm.h b/include/linux/mfd/bcm2835-pm.h index ed37dc40e82a..f70a810c55f7 100644 --- a/include/linux/mfd/bcm2835-pm.h +++ b/include/linux/mfd/bcm2835-pm.h @@ -9,6 +9,7 @@ struct bcm2835_pm { struct device *dev; void __iomem *base; void __iomem *asb; + void __iomem *rpivid_asb; }; #endif /* BCM2835_MFD_PM_H */ -- 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:[~2022-06-01 12:54 UTC|newest] Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-06-01 12:53 [PATCH V2 00/11] soc: bcm2835-power: Prepare BCM2711 V3D support Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 01/11] dt-bindings: soc: bcm: bcm2835-pm: Convert bindings to DT schema Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 02/11] dt-bindings: soc: bcm: bcm2835-pm: Introduce reg-names Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 13:13 ` Peter Robinson 2022-06-01 13:13 ` Peter Robinson 2022-06-01 12:53 ` [PATCH V2 03/11] dt-bindings: soc: bcm: bcm2835-pm: Add support for bcm2711 Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 13:12 ` Peter Robinson 2022-06-01 13:12 ` Peter Robinson 2022-06-05 22:30 ` Rob Herring 2022-06-05 22:30 ` Rob Herring 2022-06-01 12:53 ` [PATCH V2 04/11] ARM: dts: bcm2835/bcm2711: Introduce reg-names in watchdog node Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 05/11] ARM: dts: bcm2711: Use proper compatible in PM/Watchdog node Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 06/11] mfd: bcm2835-pm: Use 'reg-names' to get resources Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren [this message] 2022-06-01 12:53 ` [PATCH V2 07/11] mfd: bcm2835-pm: Add support for BCM2711 Stefan Wahren 2022-06-01 13:14 ` Peter Robinson 2022-06-01 13:14 ` Peter Robinson 2022-06-01 12:53 ` [PATCH V2 08/11] soc: bcm: bcm2835-power: Refactor ASB control Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 09/11] soc: bcm: bcm2835-power: Resolve ASB register macros Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 10/11] soc: bcm: bcm2835-power: Add support for BCM2711's RPiVid ASB Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 12:53 ` [PATCH V2 11/11] soc: bcm: bcm2835-power: Bypass power_on/off() calls Stefan Wahren 2022-06-01 12:53 ` Stefan Wahren 2022-06-01 13:19 ` [PATCH V2 00/11] soc: bcm2835-power: Prepare BCM2711 V3D support Peter Robinson 2022-06-01 13:19 ` Peter Robinson 2022-06-01 13:31 ` Stefan Wahren 2022-06-01 13:31 ` Stefan Wahren
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