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Date: Wed, 19 Feb 2020 12:09:14 +0800 From: Chunyan Zhang <zhang.lyra@...il.com> To: Stephen Boyd <sboyd@...nel.org>, Michael Turquette <mturquette@...libre.com>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com> Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Orson Zhai <orsonzhai@...il.com>, Baolin Wang <baolin.wang7@...il.com>, Chunyan Zhang <zhang.lyra@...il.com>, Chunyan Zhang <chunyan.zhang@...soc.com> Subject: [PATCH v5 6/7] clk: sprd: support to get regmap from parent node From: Chunyan Zhang <chunyan.zhang@...soc.com> 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@...soc.com> --- 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
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