From: Chen-Yu Tsai Date: Mon, 8 Sep 2025 18:10:53 +0000 (+0800) Subject: soc: sunxi: sram: register regmap as syscon X-Git-Tag: v6.18-rc1~145^2~5^2 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e6b84cc2a6fe62b4070d73f2d2d7b2544a11df87;p=thirdparty%2Fkernel%2Flinux.git soc: sunxi: sram: register regmap as syscon If the system controller had a ethernet controller glue layer control register, a limited access regmap would be registered and tied to the system controller struct device for the ethernet driver to use. Until now, for the ethernet driver to acquire this regmap, it had to do a of_parse_phandle() + find device + dev_get_regmap() sequence. Since the syscon framework allows a provider to register a custom regmap for its device node, and the ethernet driver already uses syscon for one platform, this provides a much more easier way to pass the regmap. Use of_syscon_register_regmap() to register our regmap with the syscon framework so that consumers can retrieve it that way. Acked-by: Jernej Skrabec Link: https://patch.msgid.link/20250908181059.1785605-5-wens@kernel.org Signed-off-by: Chen-Yu Tsai --- diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c index 16144a0a0d371..446b9fc1f1759 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -12,6 +12,7 @@ #include #include +#include #include #include #include @@ -367,6 +368,7 @@ static int __init sunxi_sram_probe(struct platform_device *pdev) const struct sunxi_sramc_variant *variant; struct device *dev = &pdev->dev; struct regmap *regmap; + int ret; sram_dev = &pdev->dev; @@ -384,6 +386,10 @@ static int __init sunxi_sram_probe(struct platform_device *pdev) regmap = devm_regmap_init_mmio(dev, base, &sunxi_sram_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); + + ret = of_syscon_register_regmap(dev->of_node, regmap); + if (ret) + return ret; } of_platform_populate(dev->of_node, NULL, NULL, dev);