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[v3,3/3] media: mtk-mdp: Fix mdp device tree

Message ID 1494559361-42835-4-git-send-email-minghsiu.tsai@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Minghsiu Tsai May 12, 2017, 3:22 a.m. UTC 
From: Daniel Kurtz <djkurtz@chromium.org>

If the mdp_* nodes are under an mdp sub-node, their corresponding
platform device does not automatically get its iommu assigned properly.

Fix this by moving the mdp component nodes up a level such that they are
siblings of mdp and all other SoC subsystems.  This also simplifies the
device tree.

Although it fixes iommu assignment issue, it also break compatibility
with old device tree. So, the patch in driver is needed to iterate over
sibling mdp device nodes, not child ones, to keep driver work properly.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>

---
 drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
index 9e4eb7d..a5ad586 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
@@ -118,7 +118,7 @@  static int mtk_mdp_probe(struct platform_device *pdev)
 	mutex_init(&mdp->vpulock);
 
 	/* Iterate over sibling MDP function blocks */
-	for_each_child_of_node(dev->of_node, node) {
+	for_each_child_of_node(dev->of_node->parent, node) {
 		const struct of_device_id *of_id;
 		enum mtk_mdp_comp_type comp_type;
 		int comp_id;