From: Yu-Chun Lin <eleanor.lin@realtek.com>
Date: Thu, 23 Oct 2025 07:55:29 +0000 (+0800)
Subject: pinctrl: realtek: Select REGMAP_MMIO for RTD driver
X-Git-Tag: v6.18-rc7~16^2~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=369f772299821f93f872bf1b4d7d7ed2fc50243b;p=thirdparty%2Flinux.git

pinctrl: realtek: Select REGMAP_MMIO for RTD driver

The pinctrl-rtd driver uses 'devm_regmap_init_mmio', which requires
'REGMAP_MMIO' to be enabled.

Without this selection, the build fails with an undefined reference:
aarch64-none-linux-gnu-ld: drivers/pinctrl/realtek/pinctrl-rtd.o: in
function rtd_pinctrl_probe': pinctrl-rtd.c:(.text+0x5a0): undefined
reference to __devm_regmap_init_mmio_clk'

Fix this by selecting 'REGMAP_MMIO' in the Kconfig.

Fixes: e99ce78030db ("pinctrl: realtek: Add common pinctrl driver for Realtek DHC RTD SoCs")
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/pinctrl/realtek/Kconfig b/drivers/pinctrl/realtek/Kconfig
index 0fc6bd4fcb7ec..400c9e5b16ada 100644
--- a/drivers/pinctrl/realtek/Kconfig
+++ b/drivers/pinctrl/realtek/Kconfig
@@ -6,6 +6,7 @@ config PINCTRL_RTD
 	default y
 	select PINMUX
 	select GENERIC_PINCONF
+	select REGMAP_MMIO
 
 config PINCTRL_RTD1619B
 	tristate "Realtek DHC 1619B pin controller driver"