mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 00:49:43 +00:00
38b6686f05
Add pinctrl driver for i.MX8. The pads configuration is controlled by SCU, so need to ask SCU to configure pads through scfw API. Add pinctrl-scu to invoke sc_pad_set to configure pads. Add a new flag IMX8_USE_SCU to differentiate i.MX8 from other platforms which could directly configure pads from Acore side. Add CONFIG_PINCTRL_IMX8 as the built gate. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Anatolij Gustschin <agust@denx.de> Cc: Stefano Babic <sbabic@denx.de>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2016 Peng Fan <van.freenix@gmail.com>
|
|
*/
|
|
|
|
#ifndef __DRIVERS_PINCTRL_IMX_H
|
|
#define __DRIVERS_PINCTRL_IMX_H
|
|
|
|
/**
|
|
* @base: the address to the controller in virtual memory
|
|
* @input_sel_base: the address of the select input in virtual memory.
|
|
* @flags: flags specific for each soc
|
|
* @mux_mask: Used when SHARE_MUX_CONF_REG flag is added
|
|
*/
|
|
struct imx_pinctrl_soc_info {
|
|
void __iomem *base;
|
|
void __iomem *input_sel_base;
|
|
unsigned int flags;
|
|
unsigned int mux_mask;
|
|
};
|
|
|
|
/**
|
|
* @dev: a pointer back to containing device
|
|
* @info: the soc info
|
|
*/
|
|
struct imx_pinctrl_priv {
|
|
struct udevice *dev;
|
|
struct imx_pinctrl_soc_info *info;
|
|
};
|
|
|
|
extern const struct pinctrl_ops imx_pinctrl_ops;
|
|
|
|
#define IMX_NO_PAD_CTL 0x80000000 /* no pin config need */
|
|
#define IMX_PAD_SION 0x40000000 /* set SION */
|
|
|
|
/*
|
|
* Each pin represented in fsl,pins consists of 5 u32 PIN_FUNC_ID and
|
|
* 1 u32 CONFIG, so 24 types in total for each pin.
|
|
*/
|
|
#define FSL_PIN_SIZE 24
|
|
#define SHARE_FSL_PIN_SIZE 20
|
|
|
|
/* Each pin on imx8qm/qxp consists of 2 u32 PIN_FUNC_ID and 1 u32 CONFIG */
|
|
#define SHARE_IMX8_PIN_SIZE 12
|
|
|
|
#define SHARE_MUX_CONF_REG 0x1
|
|
#define ZERO_OFFSET_VALID 0x2
|
|
#define CONFIG_IBE_OBE 0x4
|
|
#define IMX8_USE_SCU 0x8
|
|
|
|
#define IOMUXC_CONFIG_SION (0x1 << 4)
|
|
|
|
int imx_pinctrl_probe(struct udevice *dev, struct imx_pinctrl_soc_info *info);
|
|
|
|
int imx_pinctrl_remove(struct udevice *dev);
|
|
|
|
#ifdef CONFIG_PINCTRL_IMX_SCU
|
|
int imx_pinctrl_scu_conf_pins(struct imx_pinctrl_soc_info *info,
|
|
u32 *pin_data, int npins);
|
|
#else
|
|
static inline int imx_pinctrl_scu_conf_pins(struct imx_pinctrl_soc_info *info,
|
|
u32 *pin_data, int npins)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#endif /* __DRIVERS_PINCTRL_IMX_H */
|