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authorChunyan Zhang <chunyan.zhang@unisoc.com>2020-03-04 15:27:29 +0800
committerStephen Boyd <sboyd@kernel.org>2020-03-24 19:03:57 -0700
commitf95e8c7923d1b65b892f7052f66f8588b08f65b3 (patch)
tree8ab63a817d8c262d4b37f7c7d304099bad72d492 /drivers/clk/sprd
parentea8ca3109dd4dc14c4a8813b8c4a6d8d011836c4 (diff)
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clk: sprd: support to get regmap from parent node
Some SC9863a clock nodes would be the child of a syscon node, clocks can use the regmap of syscon device directly for this kind of cases. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200304072730.9193-7-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/sprd')
-rw-r--r--drivers/clk/sprd/common.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/clk/sprd/common.c b/drivers/clk/sprd/common.c
index c0af4779892b..d620bbbcdfc8 100644
--- a/drivers/clk/sprd/common.c
+++ b/drivers/clk/sprd/common.c
@@ -40,7 +40,8 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
const struct sprd_clk_desc *desc)
{
void __iomem *base;
- struct device_node *node = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
struct regmap *regmap;
if (of_find_property(node, "sprd,syscon", NULL)) {
@@ -49,6 +50,13 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
pr_err("%s: failed to get syscon regmap\n", __func__);
return PTR_ERR(regmap);
}
+ } else if (of_device_is_compatible(of_get_parent(dev->of_node),
+ "syscon")) {
+ regmap = device_node_to_regmap(of_get_parent(dev->of_node));
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to get regmap from its parent.\n");
+ return PTR_ERR(regmap);
+ }
} else {
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))