From patchwork Tue May 9 14:32:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 1778994 X-Patchwork-Delegate: sbabic@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=denx.de header.i=@denx.de header.a=rsa-sha256 header.s=phobos-20191101 header.b=YOkFkXCr; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.a=rsa-sha256 header.s=phobos-20191101 header.b=sb0RbLZ1; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4QG0yH4zgDz20ff for ; Wed, 10 May 2023 00:33:26 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id BFAF285BFB; Tue, 9 May 2023 16:33:14 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=denx.de Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1683642794; bh=7CJaWEVk/gFgoyXnAy6oqoPgKMgVYKT7bx7uReCY9p0=; h=From:To:Cc:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=YOkFkXCrtR0hj0EVkenWyvcAAe+TSVwyoEh9ct+giEXR+uVXcIzcNMG6qX+zWmF5H WLXlYcvm9djVgdFv4PsVdGkBWdVau7suE5dm/HScmbHTPcKem99HYxe9wRfX9Nig0d qUueOc06KXgTZrieQYcPC2MABY7D7G/j4yh9JJ8DAFyiUZ41u2CtTShyK50xcxDH7c XLgJh7L+FwfObsWFDZjROZBaU6wumpssuJXLF1xd+SZoM1NCLNWqmCUcusFmeH5zqC fQxnIuSKHasYzF8BkFj4pblt6v9wkenuKvNfVf63NBvcAV4MYsUsHBnyKn5M57DlE2 VL0Tzd4ViRQfQ== Received: from localhost.localdomain (85-222-111-42.dynamic.chello.pl [85.222.111.42]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: lukma@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id CC89585B08; Tue, 9 May 2023 16:33:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1683642793; bh=7CJaWEVk/gFgoyXnAy6oqoPgKMgVYKT7bx7uReCY9p0=; h=From:To:Cc:Subject:Date:From; b=sb0RbLZ1cOV5cRknjCPApDlM1T+FVmdvjpoXLOazoH9rGA6+N4u1msuh595e81HH3 OA108TsDdqcRGivBrC5YLOLetsCwRoUzmVRYV2pTb+9KeL83bZL5YkX12QXCZqwAY/ gwLj6DcWn3Wi5t1GrGrp43XWiy2zGVL/HY8ZA1X28YYT4K6X6XmTQSYiQZrfJdLJdB +lQj4XJGpPWBd0uErmg7HWpADAJQr9+1wwYiYjYa/pUoIcAD3aP6cXfpj4QLw50JHj D1sj/0FQdW3W96HWo97ueucOmj6HcNJeRLzoEeNBtweXcmczagOJSwJUHuqFUUAzgW 97XeggQ+POQZQ== From: Lukasz Majewski To: U-Boot Mailing List Cc: Stefano Babic , Peng Fan , Peng Fan , Fabio Estevam , "'NXP i . MX U-Boot Team'" , Marek Vasut , Lukasz Majewski Subject: [PATCH 1/5] arm: mxs: Provide Kconfig option to to not use VDD5V as IMX28 PMU source Date: Tue, 9 May 2023 16:32:39 +0200 Message-Id: <20230509143243.1523791-1-lukma@denx.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean This option sets the current limit for 5V source to zero, so all the PMU outputs are primarily powered from battery source (DCDC_BAT). This option may be set on systems, where the 5V is NOT supposed to be in any scenario powering the system - for example on systems where DCDC_BAT is connected to fixed and regulated 4.2V source (so the "battery" is not present). Signed-off-by: Lukasz Majewski --- arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 4 ++++ arch/arm/mach-imx/mxs/Kconfig | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c index c33170f06d..9965810ac2 100644 --- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c +++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c @@ -752,6 +752,10 @@ static void mxs_batt_boot(void) POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK, 0x8 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET); + if (CONFIG_IS_ENABLED(MXS_PMU_MINIMAL_VDD5V_CURRENT)) + setbits_le32(&power_regs->hw_power_5vctrl, + POWER_5VCTRL_ILIMIT_EQ_ZERO); + mxs_power_enable_4p2(); } diff --git a/arch/arm/mach-imx/mxs/Kconfig b/arch/arm/mach-imx/mxs/Kconfig index b2026a3758..3232b0fb67 100644 --- a/arch/arm/mach-imx/mxs/Kconfig +++ b/arch/arm/mach-imx/mxs/Kconfig @@ -51,6 +51,14 @@ endchoice config SYS_SOC default "mxs" +config SPL_MXS_PMU_MINIMAL_VDD5V_CURRENT + bool "Force minimal current draw from VDD5V by MX28 PMU" + default n + help + After setting this option, the current drawn from VDD5V + by the PMU is reduced to zero - the DCDC_BATT is used as + the main power source for PMU. + source "board/freescale/mx28evk/Kconfig" source "board/liebherr/xea/Kconfig"