From 855ffdfa650aa54edf2bfdd99da50cd6255453b8 Mon Sep 17 00:00:00 2001 From: Svyatoslav Ryhel Date: Fri, 30 Jun 2023 10:29:04 +0300 Subject: board: asus: grouper: add Google Nexus 7 (2012) support Nexus 7 is a mini tablet computer co-developed by Google and Asus that runs the Android operating system. The Nexus 7 features a 7" display, an Nvidia Tegra 3 quad-core chip, 1 GB of RAM and 8/16 GB of internal storage. This patch brings support for all 3 known ASUS/Google devices: - Nexus 7 (2012) E1565 - Nexus 7 (2012) PM269 - Nexus 7 (2012) 3G - tilapia Tested-by: Andreas Westman Dorcsak # ASUS Grouper E1565 Tested-by: Svyatoslav Ryhel # ASUS Grouper E1565 Signed-off-by: Svyatoslav Ryhel Signed-off-by: Thierry Reding --- board/asus/grouper/grouper-spl-max.c | 45 ++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 board/asus/grouper/grouper-spl-max.c (limited to 'board/asus/grouper/grouper-spl-max.c') diff --git a/board/asus/grouper/grouper-spl-max.c b/board/asus/grouper/grouper-spl-max.c new file mode 100644 index 0000000000..844383766a --- /dev/null +++ b/board/asus/grouper/grouper-spl-max.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * T30 Grouper MAX SPL stage configuration + * + * (C) Copyright 2010-2013 + * NVIDIA Corporation + * + * (C) Copyright 2022 + * Svyatoslav Ryhel + */ + +#include +#include +#include + +#define MAX77663_I2C_ADDR (0x3C << 1) + +#define MAX77663_REG_SD0 0x16 +#define MAX77663_REG_SD0_DATA (0x2100 | MAX77663_REG_SD0) +#define MAX77663_REG_SD1 0x17 +#define MAX77663_REG_SD1_DATA (0x3000 | MAX77663_REG_SD1) +#define MAX77663_REG_LDO4 0x2B +#define MAX77663_REG_LDO4_DATA (0xE000 | MAX77663_REG_LDO4) + +#define MAX77663_REG_GPIO4 0x3A +#define MAX77663_REG_GPIO4_DATA (0x0100 | MAX77663_REG_GPIO4) + +void pmic_enable_cpu_vdd(void) +{ + /* Set VDD_CORE to 1.200V. */ + tegra_i2c_ll_write(MAX77663_I2C_ADDR, MAX77663_REG_SD1_DATA); + + udelay(1000); + + /* Bring up VDD_CPU to 1.0125V. */ + tegra_i2c_ll_write(MAX77663_I2C_ADDR, MAX77663_REG_SD0_DATA); + udelay(1000); + + /* Bring up VDD_RTC to 1.200V. */ + tegra_i2c_ll_write(MAX77663_I2C_ADDR, MAX77663_REG_LDO4_DATA); + udelay(10 * 1000); + + /* Set 32k-out gpio state */ + tegra_i2c_ll_write(MAX77663_I2C_ADDR, MAX77663_REG_GPIO4_DATA); +} -- cgit v1.2.3