Commit 484c58d6 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Linus Walleij
Browse files

pinctrl: remove zte zx driver 



The zte zx platform is getting removed, so this driver is no
longer needed.

Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210120132045.2127659-3-arnd@kernel.org


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent df1bdee8

Documentation/devicetree/bindings/pinctrl/pinctrl-zx.txt

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* ZTE ZX Pin Controller



The pin controller on ZTE ZX platforms is kinda of hybrid.  It consists of

a main controller and an auxiliary one.  For example, on ZX296718 SoC, the

main controller is TOP_PMM and the auxiliary one is AON_IOCFG.  Both

controllers work together to control pin multiplexing and configuration in

the way illustrated as below.





           GMII_RXD3 ---+

                        |

             DVI1_HS ---+----------------------------- GMII_RXD3 (TOP pin)

                        |

             BGPIO16 ---+                               ^

                                                        | pinconf

                        ^                               |

                        | pinmux                        |

                        |                               |



                   TOP_PMM (main)           AON_IOCFG (aux)



                        |                       |       |

                        |                pinmux |       |

                        | pinmux                v       |

                        v                               | pinconf

                                    KEY_ROW2 ---+       v

        PORT1_LCD_TE ---+                       |

                        |            AGPIO10 ---+------ KEY_ROW2 (AON pin)

          I2S0_DOUT3 ---+                       |

                        |-----------------------+

            PWM_OUT3 ---+

                        |

             VGA_VS1 ---+





For most of pins like GMII_RXD3 in the figure, the pinmux function is

controlled by TOP_PMM block only, and this type of pins are meant by term

'TOP pins'.  For pins like KEY_ROW2, the pinmux is controlled by both

TOP_PMM and AON_IOCFG blocks, as the available multiplexing functions for

the pin spread in both controllers.  This type of pins are called 'AON pins'.

Though pinmux implementation is quite different, pinconf is same for both

types of pins.  Both are controlled by auxiliary controller, i.e. AON_IOCFG

on ZX296718.



Required properties:

- compatible: should be "zte,zx296718-pmm".

- reg: the register physical address and length.

- zte,auxiliary-controller: phandle to the auxiliary pin controller which

  implements pinmux for AON pins and pinconf for all pins.



The following pin configuration are supported. Please refer to

pinctrl-bindings.txt in this directory for more details of the common

pinctrl bindings used by client devices.



- bias-pull-up

- bias-pull-down

- drive-strength

- input-enable

- slew-rate



Examples:



iocfg: pin-controller@119000 {

	compatible = "zte,zx296718-iocfg";

	reg = <0x119000 0x1000>;

};



pmm: pin-controller@1462000 {

	compatible = "zte,zx296718-pmm";

	reg = <0x1462000 0x1000>;

	zte,auxiliary-controller = <&iocfg>;

};



&pmm {

	vga_pins: vga {

		pins = "KEY_COL1", "KEY_COL2", "KEY_ROW1", "KEY_ROW2";

		function = "VGA";

	};

};



&vga {

	pinctrl-names = "default";

	pinctrl-0 = <&vga_pins>;

};

drivers/pinctrl/Kconfig

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@@ -417,7 +417,6 @@ source "drivers/pinctrl/ti/Kconfig" 
source "drivers/pinctrl/uniphier/Kconfig"

source "drivers/pinctrl/vt8500/Kconfig"

source "drivers/pinctrl/mediatek/Kconfig"

source "drivers/pinctrl/zte/Kconfig"

source "drivers/pinctrl/meson/Kconfig"

source "drivers/pinctrl/cirrus/Kconfig"

source "drivers/pinctrl/visconti/Kconfig"

drivers/pinctrl/Makefile

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@@ -71,6 +71,5 @@ obj-y += ti/ 
obj-$(CONFIG_PINCTRL_UNIPHIER)	+= uniphier/

obj-$(CONFIG_ARCH_VT8500)	+= vt8500/

obj-y				+= mediatek/

obj-$(CONFIG_PINCTRL_ZX)	+= zte/

obj-y				+= cirrus/

obj-$(CONFIG_PINCTRL_VISCONTI)	+= visconti/

drivers/pinctrl/zte/Kconfig

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# SPDX-License-Identifier: GPL-2.0-only

config PINCTRL_ZX

	bool

	select PINMUX

	select GENERIC_PINCONF

	select GENERIC_PINCTRL_GROUPS

	select GENERIC_PINMUX_FUNCTIONS



config PINCTRL_ZX296718

	bool "ZTE ZX296718 pinctrl driver"

	depends on OF && ARCH_ZX

	select PINCTRL_ZX

	help

	  Say Y here to enable the ZX296718 pinctrl driver

drivers/pinctrl/zte/Makefile

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# SPDX-License-Identifier: GPL-2.0-only

obj-$(CONFIG_PINCTRL_ZX)	+= pinctrl-zx.o

obj-$(CONFIG_PINCTRL_ZX296718)	+= pinctrl-zx296718.o