From: Chunyan Zhang <zhang.lyra@gmail.com>
To: Stephen Boyd <sboyd@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang7@gmail.com>,
Chunyan Zhang <zhang.lyra@gmail.com>,
Chunyan Zhang <chunyan.zhang@unisoc.com>
Subject: [PATCH v5 6/7] clk: sprd: support to get regmap from parent node
Date: Wed, 19 Feb 2020 12:09:14 +0800 [thread overview]
Message-ID: <20200219040915.2153-7-zhang.lyra@gmail.com> (raw)
In-Reply-To: <20200219040915.2153-1-zhang.lyra@gmail.com>
From: Chunyan Zhang <chunyan.zhang@unisoc.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@unisoc.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
next prev parent reply other threads:[~2020-02-19 4:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-19 4:09 [PATCH v5 0/7] Add clocks for Unisoc's SC9863A Chunyan Zhang
2020-02-19 4:09 ` [PATCH v5 1/7] clk: sprd: add gate for pll clocks Chunyan Zhang
2020-02-19 4:09 ` [PATCH v5 2/7] dt-bindings: clk: sprd: rename the common file name sprd.txt to SoC specific Chunyan Zhang
2020-02-19 4:09 ` [PATCH v5 3/7] dt-bindings: clk: sprd: add bindings for sc9863a clock controller Chunyan Zhang
2020-02-26 15:26 ` Rob Herring
2020-02-27 2:27 ` Chunyan Zhang
2020-02-19 4:09 ` [PATCH v5 4/7] clk: sprd: Add dt-bindings include file for SC9863A Chunyan Zhang
2020-02-19 4:09 ` [PATCH v5 5/7] clk: sprd: Add macros for referencing parents without strings Chunyan Zhang
2020-02-19 4:09 ` Chunyan Zhang [this message]
2020-02-19 4:09 ` [PATCH v5 7/7] clk: sprd: add clocks support for SC9863A Chunyan Zhang
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