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Surface 2 is a Surface-series Windows RT hybrid tablet computer created by Microsoft. Surface 2 uses a 1.7 GHz quad-core Nvidia Tegra 4 chipset with 2 GB of RAM, features 10.6 inch FullHD ClearType HD screen with 16:9 aspect ratio and 32/64 GB of internal memory that can be supplemented with a microSDXC card giving up to 64 GB of additional storage. Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Surface 2 SPL stage configuration
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*
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* (C) Copyright 2010-2013
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* NVIDIA Corporation <www.nvidia.com>
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*
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* (C) Copyright 2023
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* Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <asm/arch/tegra.h>
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#include <asm/arch-tegra/tegra_i2c.h>
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#include <linux/delay.h>
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#define TPS65913_I2C_ADDR (0x58 << 1)
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#define TPS65913_SMPS12_CTRL 0x20
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#define TPS65913_SMPS12_VOLTAGE 0x23
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#define TPS65913_SMPS45_CTRL 0x28
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#define TPS65913_SMPS45_VOLTAGE 0x2B
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#define TPS65913_SMPS12_CTRL_DATA (0x5100 | TPS65913_SMPS12_CTRL)
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#define TPS65913_SMPS12_VOLTAGE_DATA (0x3900 | TPS65913_SMPS12_VOLTAGE)
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#define TPS65913_SMPS45_CTRL_DATA (0x5100 | TPS65913_SMPS45_CTRL)
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#define TPS65913_SMPS45_VOLTAGE_DATA (0x4c00 | TPS65913_SMPS45_VOLTAGE)
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void pmic_enable_cpu_vdd(void)
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{
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/* Set CORE VDD to 1.200V. */
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tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS45_VOLTAGE_DATA);
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udelay(1000);
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tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS45_CTRL_DATA);
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udelay(1000);
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/* Set CPU VDD to 1.0125V. */
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tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS12_VOLTAGE_DATA);
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udelay(1000);
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tegra_i2c_ll_write(TPS65913_I2C_ADDR, TPS65913_SMPS12_CTRL_DATA);
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udelay(10 * 1000);
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}
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