diff options
| author | Patrick Delaunay <patrick.delaunay@st.com> | 2018-03-20 11:45:14 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-04-06 20:45:28 -0400 |
| commit | e16750ff0e435bc7a41954f27607c663f27857bc (patch) | |
| tree | 6330bf5416ed83f11a506dbc58e4be168418ef58 /arch | |
| parent | b90f0e7c37f30868786e560fed80e487b39b3761 (diff) | |
stm32mp: add syscon for STGEN
Add STGEN as SYSCON device: allow access to device address
defined in device tree
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/dts/stm32mp157-u-boot.dtsi | 7 | ||||
| -rw-r--r-- | arch/arm/mach-stm32mp/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-stm32mp/include/mach/stm32.h | 5 | ||||
| -rw-r--r-- | arch/arm/mach-stm32mp/syscon.c | 23 |
4 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/dts/stm32mp157-u-boot.dtsi b/arch/arm/dts/stm32mp157-u-boot.dtsi index d374b2bc08..7a9a4ce73c 100644 --- a/arch/arm/dts/stm32mp157-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157-u-boot.dtsi @@ -31,6 +31,13 @@ soc { u-boot,dm-pre-reloc; }; + + stgen: stgen@5C008000 { + compatible = "st,stm32-stgen"; + reg = <0x5C008000 0x1000>; + status = "okay"; + u-boot,dm-pre-reloc; + }; }; &clk_hsi { diff --git a/arch/arm/mach-stm32mp/Makefile b/arch/arm/mach-stm32mp/Makefile index 4620869b36..a495c53be8 100644 --- a/arch/arm/mach-stm32mp/Makefile +++ b/arch/arm/mach-stm32mp/Makefile @@ -6,5 +6,6 @@ obj-y += cpu.o obj-y += dram_init.o +obj-y += syscon.o obj-$(CONFIG_SPL_BUILD) += spl.o diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h index 40faeb0814..c7a27894c4 100644 --- a/arch/arm/mach-stm32mp/include/mach/stm32.h +++ b/arch/arm/mach-stm32mp/include/mach/stm32.h @@ -25,6 +25,11 @@ #define STM32_DDR_SIZE SZ_1G #ifndef __ASSEMBLY__ +/* enumerated used to identify the SYSCON driver instance */ +enum { + STM32MP_SYSCON_UNKNOWN, + STM32MP_SYSCON_STGEN, +}; /* * enumerated for boot interface from Bootrom, used in TAMP_BOOT_CONTEXT diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c new file mode 100644 index 0000000000..5641745931 --- /dev/null +++ b/arch/arm/mach-stm32mp/syscon.c @@ -0,0 +1,23 @@ +/* + * Copyright (C) 2018, STMicroelectronics - All Rights Reserved + * + * SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause + */ + +#include <common.h> +#include <dm.h> +#include <syscon.h> +#include <asm/arch/stm32.h> + +static const struct udevice_id stm32mp_syscon_ids[] = { + { .compatible = "st,stm32-stgen", + .data = STM32MP_SYSCON_STGEN }, + { } +}; + +U_BOOT_DRIVER(syscon_stm32mp) = { + .name = "stmp32mp_syscon", + .id = UCLASS_SYSCON, + .of_match = stm32mp_syscon_ids, + .bind = dm_scan_fdt_dev, +}; |