40 lines
1.4 KiB
Diff
40 lines
1.4 KiB
Diff
From 3fde6b7152cb9153e404a17b731188acadf1ddd9 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 3 Feb 2020 17:30:46 +0000
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Subject: [PATCH] staging: vchiq_arm: Give vchiq children DT nodes
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vchiq kernel clients are now instantiated as platform drivers rather
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than using DT, but the children of the vchiq interface may still
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benefit from access to DT properties. Give them the option of a
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a sub-node of the vchiq parent for configuration and to allow
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them to be disabled.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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.../staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
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+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
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@@ -1785,12 +1785,20 @@ vchiq_register_child(struct platform_dev
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pdevinfo.id = PLATFORM_DEVID_NONE;
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pdevinfo.dma_mask = DMA_BIT_MASK(32);
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+ np = of_get_child_by_name(pdev->dev.of_node, name);
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+
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+ /* Skip the child if it is explicitly disabled */
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+ if (np && !of_device_is_available(np))
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+ return NULL;
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+
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child = platform_device_register_full(&pdevinfo);
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if (IS_ERR(child)) {
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dev_warn(&pdev->dev, "%s not registered\n", name);
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child = NULL;
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}
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+ child->dev.of_node = np;
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+
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/*
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* We want the dma-ranges etc to be copied from a device with the
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* correct dma-ranges for the VPU.
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