From abeebc19dbe0445793dab45d48dc60541e58fe6a Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 18 Oct 2018 14:28:25 +0200 Subject: imx8: add iomux configuration api Add iomux configuration api. Signed-off-by: Peng Fan Reviewed-by: Anatolij Gustschin Cc: Stefano Babic --- arch/arm/mach-imx/imx8/Makefile | 2 +- arch/arm/mach-imx/imx8/iomux.c | 43 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+), 1 deletion(-) create mode 100644 arch/arm/mach-imx/imx8/iomux.c (limited to 'arch/arm/mach-imx') diff --git a/arch/arm/mach-imx/imx8/Makefile b/arch/arm/mach-imx/imx8/Makefile index 57876139a1..31ad169ccf 100644 --- a/arch/arm/mach-imx/imx8/Makefile +++ b/arch/arm/mach-imx/imx8/Makefile @@ -4,4 +4,4 @@ # SPDX-License-Identifier: GPL-2.0+ # -obj-y += cpu.o +obj-y += cpu.o iomux.o diff --git a/arch/arm/mach-imx/imx8/iomux.c b/arch/arm/mach-imx/imx8/iomux.c new file mode 100644 index 0000000000..0ade85fb8f --- /dev/null +++ b/arch/arm/mach-imx/imx8/iomux.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018 NXP + */ + +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +/* + * configures a single pad in the iomuxer + */ +void imx8_iomux_setup_pad(iomux_cfg_t pad) +{ + sc_pad_t pin_id = pad & PIN_ID_MASK; + int ret; + + u32 val = (u32)((pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT); + + val |= PADRING_IFMUX_EN_MASK; + val |= PADRING_GP_EN_MASK; + + ret = sc_pad_set(-1, pin_id, val); + if (ret) + printf("sc_pad_set failed!, pin: %u, val: 0x%x\n", pin_id, val); + + debug("iomux: pin %d, val = 0x%x\n", pin_id, val); +} + +/* configures a list of pads within declared with IOMUX_PADS macro */ +void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count) +{ + iomux_cfg_t const *p = pad_list; + int i; + + for (i = 0; i < count; i++) { + imx8_iomux_setup_pad(*p); + p++; + } +} -- cgit v1.2.1