linux-kernel - [PATCH] ARM: imx: only enable pinctrl as needed

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Date:   Tue, 25 May 2021 13:22:54 +0200
From:   Esben Haabendal <esben@...nix.com>
To:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        Russell King <linux@...linux.org.uk>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: imx: only enable pinctrl as needed

As not all mach-imx platforms has support for run-time changes of pin
configurations (such as LS1021A), a more selective approach to enabling
pinctrl infrastructure makes sense, so that an e.g. an LS1021A only kernel
could be built without pinctrl support.

Signed-off-by: Esben Haabendal <esben@...nix.com>
---
 arch/arm/mach-imx/Kconfig | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index b407b024dde3..3fc170456cde 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -6,7 +6,6 @@ menuconfig ARCH_MXC
 	select CLKSRC_IMX_GPT
 	select GENERIC_IRQ_CHIP
 	select GPIOLIB
-	select PINCTRL
 	select PM_OPP if PM
 	select SOC_BUS
 	select SRAM
@@ -61,6 +60,7 @@ config SOC_IMX31
 config SOC_IMX35
 	bool "i.MX35 support"
 	select MXC_AVIC
+	select PINCTRL
 	select PINCTRL_IMX35
 	help
 	  This enables support for Freescale i.MX35 processor
@@ -73,6 +73,7 @@ config SOC_IMX1
 	bool "i.MX1 support"
 	select CPU_ARM920T
 	select MXC_AVIC
+	select PINCTRL
 	select PINCTRL_IMX1
 	help
 	  This enables support for Freescale i.MX1 processor
@@ -85,6 +86,7 @@ config SOC_IMX25
 	bool "i.MX25 support"
 	select CPU_ARM926T
 	select MXC_AVIC
+	select PINCTRL
 	select PINCTRL_IMX25
 	help
 	  This enables support for Freescale i.MX25 processor
@@ -93,6 +95,7 @@ config SOC_IMX27
 	bool "i.MX27 support"
 	select CPU_ARM926T
 	select MXC_AVIC
+	select PINCTRL
 	select PINCTRL_IMX27
 	help
 	  This enables support for Freescale i.MX27 processor
@@ -110,6 +113,7 @@ config SOC_IMX5
 
 config	SOC_IMX50
 	bool "i.MX50 support"
+	select PINCTRL
 	select PINCTRL_IMX50
 	select SOC_IMX5
 
@@ -118,6 +122,7 @@ config	SOC_IMX50
 
 config SOC_IMX51
 	bool "i.MX51 support"
+	select PINCTRL
 	select PINCTRL_IMX51
 	select SOC_IMX5
 	help
@@ -125,6 +130,7 @@ config SOC_IMX51
 
 config	SOC_IMX53
 	bool "i.MX53 support"
+	select PINCTRL
 	select PINCTRL_IMX53
 	select SOC_IMX5
 
@@ -149,6 +155,7 @@ config SOC_IMX6Q
 	select ARM_ERRATA_775420
 	select HAVE_ARM_SCU if SMP
 	select HAVE_ARM_TWD
+	select PINCTRL
 	select PINCTRL_IMX6Q
 	select SOC_IMX6
 
@@ -159,6 +166,7 @@ config SOC_IMX6SL
 	bool "i.MX6 SoloLite support"
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_775420
+	select PINCTRL
 	select PINCTRL_IMX6SL
 	select SOC_IMX6
 
@@ -169,6 +177,7 @@ config SOC_IMX6SLL
 	bool "i.MX6 SoloLiteLite support"
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_775420
+	select PINCTRL
 	select PINCTRL_IMX6SLL
 	select SOC_IMX6
 
@@ -179,6 +188,7 @@ config SOC_IMX6SX
 	bool "i.MX6 SoloX support"
 	select ARM_ERRATA_754322
 	select ARM_ERRATA_775420
+	select PINCTRL
 	select PINCTRL_IMX6SX
 	select SOC_IMX6
 
@@ -187,6 +197,7 @@ config SOC_IMX6SX
 
 config SOC_IMX6UL
 	bool "i.MX6 UltraLite support"
+	select PINCTRL
 	select PINCTRL_IMX6UL
 	select SOC_IMX6
 	select ARM_ERRATA_814220
@@ -223,6 +234,7 @@ config SOC_IMX7D_CM4
 
 config SOC_IMX7D
 	bool "i.MX7 Dual support"
+	select PINCTRL
 	select PINCTRL_IMX7D
 	select SOC_IMX7D_CA7 if ARCH_MULTI_V7
 	select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
@@ -233,6 +245,7 @@ config SOC_IMX7D
 config SOC_IMX7ULP
 	bool "i.MX7ULP support"
 	select CLKSRC_IMX_TPM
+	select PINCTRL
 	select PINCTRL_IMX7ULP
 	select SOC_IMX7D_CA7 if ARCH_MULTI_V7
 	select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
@@ -242,6 +255,7 @@ config SOC_IMX7ULP
 config SOC_VF610
 	bool "Vybrid Family VF610 support"
 	select ARM_GIC if ARCH_MULTI_V7
+	select PINCTRL
 	select PINCTRL_VF610
 
 	help
-- 
2.31.1