From patchwork Mon May 25 10:19:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Delaunay X-Patchwork-Id: 246493 List-Id: U-Boot discussion From: patrick.delaunay at st.com (Patrick Delaunay) Date: Mon, 25 May 2020 12:19:46 +0200 Subject: [PATCH v2 6/9] board: st: stpmic1: add function stpmic1_init In-Reply-To: <20200525101949.15944-1-patrick.delaunay@st.com> References: <20200525101949.15944-1-patrick.delaunay@st.com> Message-ID: <20200525101949.15944-7-patrick.delaunay@st.com> Add a function stmpic_init to early initialize the PMIC STPMIC1 - keep vdd on during the reset cycle (to avoid issue when backup battery is absent) - Check if debug is enabled to program PMIC according to the bit This patch allows to remove the compilation of spl.c file from stm32mp1 board in dh_stm32mp1. CONFIG_SPL_BOARD_INIT is removed as the new function is called earlier in SPL, in the function board_early_init_f. Signed-off-by: Patrick Delaunay --- Changes in v2: - add stpmic1_init function, called in board_early_init_f for dh_stm32mp1 board support (and no more use spl.c from stm32mp1) - remove CONFIG_SPL_BOARD_INIT arch/arm/mach-stm32mp/Kconfig | 1 - board/dhelectronics/dh_stm32mp1/Makefile | 4 --- board/dhelectronics/dh_stm32mp1/board.c | 3 ++ board/st/common/stpmic1.c | 31 +++++++++++++++++++ board/st/common/stpmic1.h | 6 ++++ board/st/stm32mp1/spl.c | 39 +++--------------------- board/st/stm32mp1/stm32mp1.c | 6 ++++ configs/stm32mp15_basic_defconfig | 1 + 8 files changed, 52 insertions(+), 39 deletions(-) create mode 100644 board/st/common/stpmic1.h diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig index 6c995ed8d8..ea7d57477b 100644 --- a/arch/arm/mach-stm32mp/Kconfig +++ b/arch/arm/mach-stm32mp/Kconfig @@ -1,7 +1,6 @@ if ARCH_STM32MP config SPL - select SPL_BOARD_INIT select SPL_CLK select SPL_DM select SPL_DM_SEQ_ALIAS diff --git a/board/dhelectronics/dh_stm32mp1/Makefile b/board/dhelectronics/dh_stm32mp1/Makefile index 5758d9816b..b368b396a4 100644 --- a/board/dhelectronics/dh_stm32mp1/Makefile +++ b/board/dhelectronics/dh_stm32mp1/Makefile @@ -3,10 +3,6 @@ # Copyright (C) 2018, STMicroelectronics - All Rights Reserved # -ifdef CONFIG_SPL_BUILD -obj-y += ../../st/stm32mp1/spl.o -endif - obj-y += ../../st/common/stpmic1.o board.o obj-$(CONFIG_SYS_MTDPARTS_RUNTIME) += ../../st/common/stm32mp_mtdparts.o diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c index 85d56f6082..df0810dbda 100644 --- a/board/dhelectronics/dh_stm32mp1/board.c +++ b/board/dhelectronics/dh_stm32mp1/board.c @@ -37,6 +37,7 @@ #include #include #include +#include "../../st/common/stpmic1.h" /* SYSCFG registers */ #define SYSCFG_BOOTR 0x00 @@ -194,6 +195,8 @@ int board_stm32mp1_ddr_config_name_match(struct udevice *dev, int board_early_init_f(void) { + if (IS_ENABLED(CONFIG_SPL_BUILD)) + stpmic1_init(); board_get_coding_straps(); return 0; diff --git a/board/st/common/stpmic1.c b/board/st/common/stpmic1.c index ca10a2246b..64f24f1f6f 100644 --- a/board/st/common/stpmic1.c +++ b/board/st/common/stpmic1.c @@ -5,6 +5,7 @@ #include #include +#include #include #include #include @@ -160,3 +161,33 @@ int board_ddr_power_init(enum ddr_type ddr_type) return 0; } + +/* early init of PMIC */ +void stpmic1_init(void) +{ + struct udevice *dev; + + if (uclass_get_device_by_driver(UCLASS_PMIC, + DM_GET_DRIVER(pmic_stpmic1), &dev)) + return; + + /* Keep vdd on during the reset cycle */ + pmic_clrsetbits(dev, + STPMIC1_BUCKS_MRST_CR, + STPMIC1_MRST_BUCK(STPMIC1_BUCK3), + STPMIC1_MRST_BUCK(STPMIC1_BUCK3)); + + /* Check if debug is enabled to program PMIC according to the bit */ + if (readl(TAMP_BOOT_CONTEXT) & TAMP_BOOT_DEBUG_ON) { + printf("Keep debug unit ON\n"); + + pmic_clrsetbits(dev, STPMIC1_BUCKS_MRST_CR, + STPMIC1_MRST_BUCK_DEBUG, + STPMIC1_MRST_BUCK_DEBUG); + + if (STPMIC1_MRST_LDO_DEBUG) + pmic_clrsetbits(dev, STPMIC1_LDOS_MRST_CR, + STPMIC1_MRST_LDO_DEBUG, + STPMIC1_MRST_LDO_DEBUG); + } +} diff --git a/board/st/common/stpmic1.h b/board/st/common/stpmic1.h new file mode 100644 index 0000000000..ecc3276697 --- /dev/null +++ b/board/st/common/stpmic1.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ +/* + * Copyright (C) 2020, STMicroelectronics - All Rights Reserved + */ + +void stpmic1_init(void); diff --git a/board/st/stm32mp1/spl.c b/board/st/stm32mp1/spl.c index e65ff288ea..28efc5c0ae 100644 --- a/board/st/stm32mp1/spl.c +++ b/board/st/stm32mp1/spl.c @@ -5,41 +5,12 @@ #include #include -#include -#include -#include -#include -#include -#include -#include +#include "../common/stpmic1.h" -void spl_board_init(void) +int board_early_init_f(void) { - /* Keep vdd on during the reset cycle */ -#if defined(CONFIG_PMIC_STPMIC1) && defined(CONFIG_SPL_POWER_SUPPORT) - struct udevice *dev; - int ret; + if (IS_ENABLED(CONFIG_PMIC_STPMIC1) && CONFIG_IS_ENABLED(POWER_SUPPORT)) + stpmic1_init(); - ret = uclass_get_device_by_driver(UCLASS_PMIC, - DM_GET_DRIVER(pmic_stpmic1), &dev); - if (!ret) - pmic_clrsetbits(dev, - STPMIC1_BUCKS_MRST_CR, - STPMIC1_MRST_BUCK(STPMIC1_BUCK3), - STPMIC1_MRST_BUCK(STPMIC1_BUCK3)); - - /* Check if debug is enabled to program PMIC according to the bit */ - if ((readl(TAMP_BOOT_CONTEXT) & TAMP_BOOT_DEBUG_ON) && !ret) { - printf("Keep debug unit ON\n"); - - pmic_clrsetbits(dev, STPMIC1_BUCKS_MRST_CR, - STPMIC1_MRST_BUCK_DEBUG, - STPMIC1_MRST_BUCK_DEBUG); - - if (STPMIC1_MRST_LDO_DEBUG) - pmic_clrsetbits(dev, STPMIC1_LDOS_MRST_CR, - STPMIC1_MRST_LDO_DEBUG, - STPMIC1_MRST_LDO_DEBUG); - } -#endif + return 0; } diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index 33cb7f6c4d..22ad2dba9a 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -79,6 +79,12 @@ DECLARE_GLOBAL_DATA_PTR; #define USB_START_LOW_THRESHOLD_UV 1230000 #define USB_START_HIGH_THRESHOLD_UV 2150000 +int board_early_init_f(void) +{ + /* nothing to do, only used in SPL */ + return 0; +} + int checkboard(void) { int ret; diff --git a/configs/stm32mp15_basic_defconfig b/configs/stm32mp15_basic_defconfig index c7dd2926c9..628cde6cda 100644 --- a/configs/stm32mp15_basic_defconfig +++ b/configs/stm32mp15_basic_defconfig @@ -16,6 +16,7 @@ CONFIG_SPL_TEXT_BASE=0x2FFC2500 CONFIG_DISTRO_DEFAULTS=y CONFIG_FIT=y CONFIG_BOOTCOMMAND="run bootcmd_stm32mp" +CONFIG_BOARD_EARLY_INIT_F=y CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION=y CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=3 CONFIG_SPL_I2C_SUPPORT=y