ARM: imx: Allow user to disable pinctrl

Making pinctrl drivers and subsequently the pinctrl framework
user-controllable, allows building a kernel without this.
While in many (most) cases, this could make the system unbootable, it
does allow building smaller kernels for those situations where picntrl
is not needed.

One such situation is when building a kernel for NXP LS1021A systems,
which does not have run-time controllable pinctrl, so pinctrl framework
and drivers are 100% dead-weight.

Signed-off-by: Esben Haabendal <esben@geanix.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/20240506-imx-pinctrl-optional-v2-1-bdff75085156@geanix.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index ab767f05992958eb38d34134cd0f687b04de58b7..e4fe059cd861411a442bcde33933fd74a8766fa2 100644 (file)
--- 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
@@ -49,7 +48,6 @@ config SOC_IMX31
 config SOC_IMX35
        bool "i.MX35 support"
        select MXC_AVIC
-       select PINCTRL_IMX35
        help
          This enables support for Freescale i.MX35 processor
 
@@ -61,7 +59,6 @@ config SOC_IMX1
        bool "i.MX1 support"
        select CPU_ARM920T
        select MXC_AVIC
-       select PINCTRL_IMX1
        help
          This enables support for Freescale i.MX1 processor
 
@@ -73,7 +70,6 @@ config SOC_IMX25
        bool "i.MX25 support"
        select CPU_ARM926T
        select MXC_AVIC
-       select PINCTRL_IMX25
        help
          This enables support for Freescale i.MX25 processor
 
@@ -81,7 +77,6 @@ config SOC_IMX27
        bool "i.MX27 support"
        select CPU_ARM926T
        select MXC_AVIC
-       select PINCTRL_IMX27
        help
          This enables support for Freescale i.MX27 processor
 
@@ -98,7 +93,6 @@ config SOC_IMX5
 
 config SOC_IMX50
        bool "i.MX50 support"
-       select PINCTRL_IMX50
        select SOC_IMX5
 
        help
@@ -106,14 +100,12 @@ config SOC_IMX50
 
 config SOC_IMX51
        bool "i.MX51 support"
-       select PINCTRL_IMX51
        select SOC_IMX5
        help
          This enables support for Freescale i.MX51 processor
 
 config SOC_IMX53
        bool "i.MX53 support"
-       select PINCTRL_IMX53
        select SOC_IMX5
 
        help
@@ -137,7 +129,6 @@ config SOC_IMX6Q
        select ARM_ERRATA_775420
        select HAVE_ARM_SCU if SMP
        select HAVE_ARM_TWD
-       select PINCTRL_IMX6Q
        select SOC_IMX6
 
        help
@@ -147,7 +138,6 @@ config SOC_IMX6SL
        bool "i.MX6 SoloLite support"
        select ARM_ERRATA_754322
        select ARM_ERRATA_775420
-       select PINCTRL_IMX6SL
        select SOC_IMX6
 
        help
@@ -157,7 +147,6 @@ config SOC_IMX6SLL
        bool "i.MX6 SoloLiteLite support"
        select ARM_ERRATA_754322
        select ARM_ERRATA_775420
-       select PINCTRL_IMX6SLL
        select SOC_IMX6
 
        help
@@ -167,7 +156,6 @@ config SOC_IMX6SX
        bool "i.MX6 SoloX support"
        select ARM_ERRATA_754322
        select ARM_ERRATA_775420
-       select PINCTRL_IMX6SX
        select SOC_IMX6
 
        help
@@ -175,7 +163,6 @@ config SOC_IMX6SX
 
 config SOC_IMX6UL
        bool "i.MX6 UltraLite support"
-       select PINCTRL_IMX6UL
        select SOC_IMX6
        select ARM_ERRATA_814220
 
@@ -211,7 +198,6 @@ config SOC_IMX7D_CM4
 
 config SOC_IMX7D
        bool "i.MX7 Dual support"
-       select PINCTRL_IMX7D
        select SOC_IMX7D_CA7 if ARCH_MULTI_V7
        select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
        select ARM_ERRATA_814220 if ARCH_MULTI_V7
@@ -221,7 +207,6 @@ config SOC_IMX7D
 config SOC_IMX7ULP
        bool "i.MX7ULP support"
        select CLKSRC_IMX_TPM
-       select PINCTRL_IMX7ULP
        select SOC_IMX7D_CA7 if ARCH_MULTI_V7
        select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M
        help
@@ -237,7 +222,6 @@ config SOC_IMXRT
 config SOC_VF610
        bool "Vybrid Family VF610 support"
        select ARM_GIC if ARCH_MULTI_V7
-       select PINCTRL_VF610
 
        help
          This enables support for Freescale Vybrid VF610 processor.

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index 3b59d71890045b2c81993c7d8b195c099fe9e915..f3ad1049bc4a082fc7724eb6673c3e0466a095cd 100644 (file)
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -31,6 +31,7 @@ config PINCTRL_IMX1_CORE
 config PINCTRL_IMX1
        bool "IMX1 pinctrl driver"
        depends on SOC_IMX1
+       default SOC_IMX1
        select PINCTRL_IMX1_CORE
        help
          Say Y here to enable the imx1 pinctrl driver
@@ -38,6 +39,7 @@ config PINCTRL_IMX1
 config PINCTRL_IMX27
        bool "IMX27 pinctrl driver"
        depends on SOC_IMX27
+       default SOC_IMX27
        select PINCTRL_IMX1_CORE
        help
          Say Y here to enable the imx27 pinctrl driver
@@ -47,6 +49,7 @@ config PINCTRL_IMX25
        bool "IMX25 pinctrl driver"
        depends on OF
        depends on SOC_IMX25
+       default SOC_IMX25
        select PINCTRL_IMX
        help
          Say Y here to enable the imx25 pinctrl driver
@@ -54,6 +57,7 @@ config PINCTRL_IMX25
 config PINCTRL_IMX35
        bool "IMX35 pinctrl driver"
        depends on SOC_IMX35
+       default SOC_IMX35
        select PINCTRL_IMX
        help
          Say Y here to enable the imx35 pinctrl driver
@@ -61,6 +65,7 @@ config PINCTRL_IMX35
 config PINCTRL_IMX50
        bool "IMX50 pinctrl driver"
        depends on SOC_IMX50
+       default SOC_IMX50
        select PINCTRL_IMX
        help
          Say Y here to enable the imx50 pinctrl driver
@@ -68,6 +73,7 @@ config PINCTRL_IMX50
 config PINCTRL_IMX51
        bool "IMX51 pinctrl driver"
        depends on SOC_IMX51
+       default SOC_IMX51
        select PINCTRL_IMX
        help
          Say Y here to enable the imx51 pinctrl driver
@@ -75,6 +81,7 @@ config PINCTRL_IMX51
 config PINCTRL_IMX53
        bool "IMX53 pinctrl driver"
        depends on SOC_IMX53
+       default SOC_IMX53
        select PINCTRL_IMX
        help
          Say Y here to enable the imx53 pinctrl driver
@@ -82,6 +89,7 @@ config PINCTRL_IMX53
 config PINCTRL_IMX6Q
        bool "IMX6Q/DL pinctrl driver"
        depends on SOC_IMX6Q
+       default SOC_IMX6Q
        select PINCTRL_IMX
        help
          Say Y here to enable the imx6q/dl pinctrl driver
@@ -89,6 +97,7 @@ config PINCTRL_IMX6Q
 config PINCTRL_IMX6SL
        bool "IMX6SL pinctrl driver"
        depends on SOC_IMX6SL
+       default SOC_IMX6SL
        select PINCTRL_IMX
        help
          Say Y here to enable the imx6sl pinctrl driver
@@ -96,6 +105,7 @@ config PINCTRL_IMX6SL
 config PINCTRL_IMX6SLL
        bool "IMX6SLL pinctrl driver"
        depends on SOC_IMX6SLL
+       default SOC_IMX6SLL
        select PINCTRL_IMX
        help
          Say Y here to enable the imx6sll pinctrl driver
@@ -103,6 +113,7 @@ config PINCTRL_IMX6SLL
 config PINCTRL_IMX6SX
        bool "IMX6SX pinctrl driver"
        depends on SOC_IMX6SX
+       default SOC_IMX6SX
        select PINCTRL_IMX
        help
          Say Y here to enable the imx6sx pinctrl driver
@@ -110,6 +121,7 @@ config PINCTRL_IMX6SX
 config PINCTRL_IMX6UL
        bool "IMX6UL pinctrl driver"
        depends on SOC_IMX6UL
+       default SOC_IMX6UL
        select PINCTRL_IMX
        help
          Say Y here to enable the imx6ul pinctrl driver
@@ -117,6 +129,7 @@ config PINCTRL_IMX6UL
 config PINCTRL_IMX7D
        bool "IMX7D pinctrl driver"
        depends on SOC_IMX7D
+       default SOC_IMX7D
        select PINCTRL_IMX
        help
          Say Y here to enable the imx7d pinctrl driver
@@ -124,6 +137,7 @@ config PINCTRL_IMX7D
 config PINCTRL_IMX7ULP
        bool "IMX7ULP pinctrl driver"
        depends on SOC_IMX7ULP
+       default SOC_IMX7ULP
        select PINCTRL_IMX
        help
          Say Y here to enable the imx7ulp pinctrl driver
@@ -212,6 +226,7 @@ config PINCTRL_IMX93
 config PINCTRL_VF610
        bool "Freescale Vybrid VF610 pinctrl driver"
        depends on SOC_VF610
+       default SOC_VF610
        select PINCTRL_IMX
        help
          Say Y here to enable the Freescale Vybrid VF610 pinctrl driver