[PATCH v4 6/7] clk: sprd: support to get regmap from parent node
From: Chunyan Zhang <zhang.lyra@gmail.com>
Date: 2020-02-17 03:24:08
Also in:
linux-clk, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
From: Chunyan Zhang <redacted> 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 <redacted> --- drivers/clk/sprd/common.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
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))
--
2.20.1