diff options
Diffstat (limited to 'board/microsoft/surface-rt')
| -rw-r--r-- | board/microsoft/surface-rt/Kconfig | 12 | ||||
| -rw-r--r-- | board/microsoft/surface-rt/MAINTAINERS | 7 | ||||
| -rw-r--r-- | board/microsoft/surface-rt/Makefile | 6 | ||||
| -rw-r--r-- | board/microsoft/surface-rt/surface-rt-spl.c | 41 |
4 files changed, 66 insertions, 0 deletions
diff --git a/board/microsoft/surface-rt/Kconfig b/board/microsoft/surface-rt/Kconfig new file mode 100644 index 00000000000..9e66897f6b1 --- /dev/null +++ b/board/microsoft/surface-rt/Kconfig @@ -0,0 +1,12 @@ +if TARGET_SURFACE_RT + +config SYS_BOARD + default "surface-rt" + +config SYS_VENDOR + default "microsoft" + +config SYS_CONFIG_NAME + default "surface-rt" + +endif diff --git a/board/microsoft/surface-rt/MAINTAINERS b/board/microsoft/surface-rt/MAINTAINERS new file mode 100644 index 00000000000..1bbd896de92 --- /dev/null +++ b/board/microsoft/surface-rt/MAINTAINERS @@ -0,0 +1,7 @@ +Microsoft Surface RT +M: Jonas Schwöbel <jonasschwoebel@yahoo.de> +S: Maintained +F: board/microsoft/surface-rt/ +F: configs/surface-rt_defconfig +F: doc/board/microsoft/surface-rt.rst +F: include/configs/surface-rt.h diff --git a/board/microsoft/surface-rt/Makefile b/board/microsoft/surface-rt/Makefile new file mode 100644 index 00000000000..da4094a7df3 --- /dev/null +++ b/board/microsoft/surface-rt/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2021 +# Open Surface RT + +obj-$(CONFIG_SPL_BUILD) += surface-rt-spl.o diff --git a/board/microsoft/surface-rt/surface-rt-spl.c b/board/microsoft/surface-rt/surface-rt-spl.c new file mode 100644 index 00000000000..f327a80efba --- /dev/null +++ b/board/microsoft/surface-rt/surface-rt-spl.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Surface RT SPL stage configuration + * + * (C) Copyright 2010-2013 + * NVIDIA Corporation <www.nvidia.com> + * + * (C) Copyright 2021 + * Svyatoslav Ryhel <clamor95@gmail.com> + */ + +#include <asm/arch/tegra.h> +#include <asm/arch-tegra/tegra_i2c.h> +#include <linux/delay.h> + +#define TPS65911_I2C_ADDR (0x2D << 1) +#define TPS65911_VDDCTRL_OP_REG 0x28 +#define TPS65911_VDDCTRL_SR_REG 0x27 +#define TPS65911_VDDCTRL_OP_DATA (0x2400 | TPS65911_VDDCTRL_OP_REG) +#define TPS65911_VDDCTRL_SR_DATA (0x0100 | TPS65911_VDDCTRL_SR_REG) + +#define TPS62361B_I2C_ADDR (0x60 << 1) +#define TPS62361B_SET3_REG 0x03 +#define TPS62361B_SET3_DATA (0x4600 | TPS62361B_SET3_REG) + +void pmic_enable_cpu_vdd(void) +{ + /* Set VDD_CORE to 1.200V. */ + tegra_i2c_ll_write(TPS62361B_I2C_ADDR, TPS62361B_SET3_DATA); + + udelay(1000); + + /* + * Bring up CPU VDD via the TPS65911x PMIC on the DVC I2C bus. + * First set VDD to 1.0125V, then enable the VDD regulator. + */ + tegra_i2c_ll_write(TPS65911_I2C_ADDR, TPS65911_VDDCTRL_OP_DATA); + udelay(1000); + tegra_i2c_ll_write(TPS65911_I2C_ADDR, TPS65911_VDDCTRL_SR_DATA); + udelay(10 * 1000); +} |