diff options
| author |   Chunyan Zhang <chunyan.zhang@unisoc.com> | 2020-03-04 15:27:29 +0800 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2020-03-24 19:03:57 -0700 |
| commit | f95e8c7923d1b65b892f7052f66f8588b08f65b3 (patch) | |
| tree | 8ab63a817d8c262d4b37f7c7d304099bad72d492 /drivers/clk/sprd | |
| parent | clk: sprd: Add macros for referencing parents without strings (diff) | |
| download | wireguard-linux-f95e8c7923d1b65b892f7052f66f8588b08f65b3.tar.xz wireguard-linux-f95e8c7923d1b65b892f7052f66f8588b08f65b3.zip | |
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.c | 10 |
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)) |