From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A574C4321E for ; Wed, 20 Oct 2021 10:08:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 42B52611EF for ; Wed, 20 Oct 2021 10:08:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230089AbhJTKKv (ORCPT ); Wed, 20 Oct 2021 06:10:51 -0400 Received: from mail.zeus.flokli.de ([88.198.15.28]:42790 "EHLO zeus.flokli.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229555AbhJTKKq (ORCPT ); Wed, 20 Oct 2021 06:10:46 -0400 Received: from localhost (ip-84-119-226-0.unity-media.net [84.119.226.0]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: flokli@flokli.de) by zeus.flokli.de (Postfix) with ESMTPSA id 2F6E211D2BD9; Wed, 20 Oct 2021 10:00:05 +0000 (UTC) From: Florian Klink To: Heiko Stuebner , Aditya Prayoga Cc: Florian Klink , Rob Herring , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] arm64: dts: rockchip: Enable HDD power on helios64 Date: Wed, 20 Oct 2021 11:59:22 +0200 Message-Id: <20211020095926.735938-1-flokli@flokli.de> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This adds the hdd_{a,b}_power blocks present in the armbian helios64 dts. [1] Without those powered up, no HDDs will appear (except one connected via the m.2 slot). >From https://wiki.kobol.io/helios64/sata/#hdd-power: > The power delivery of the HDDs is divided into two group: > > HDD Rail A (Max. 3x Drives) > HDD Rail B (Max. 2x Drives) > > Helios64 implements a power staggering approach where HDD Rail A will be > powered up first, then few seconds later HDD Rail B will be powered up. > This power control scenario is performed to reduce the inrush current > during disk spin-up. In practice, this power staggering approach will be included in the bootloader (not in the kernel), as we might want to boot from a SATA drive. >From my experiments, if the bootloader doesn't implement the power staggering, only one HDD will get recognized (probably cause the others didn't boot due to few power). Still, it makes sense to expose this block in the device-tree, so the kernel can ensure both rails are on (and this can be shared with u-boot). [1] https://github.com/armbian/build/blob/744ea89a589d62cb6f409baab60fc6664520bc39/patch/kernel/archive/rockchip64-5.14/add-board-helios64.patch Signed-off-by: Florian Klink --- .../dts/rockchip/rk3399-kobol-helios64.dts | 32 +++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts index 738cfd21df3e..93745dcc2af6 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts @@ -82,6 +82,30 @@ led-1 { }; }; + hdd_a_power: hdd-a-power { + compatible = "regulator-fixed"; + enable-active-high; + gpio = <&gpio1 RK_PA0 GPIO_ACTIVE_HIGH>; + pinctrl-0 = <&hdd_a_power_en>; + pinctrl-names = "default"; + regulator-always-on; + regulator-boot-on; + regulator-name = "hdd_a_power"; + startup-delay-us = <2000000>; + }; + + hdd_b_power: hdd-b-power { + compatible = "regulator-fixed"; + enable-active-high; + gpio = <&gpio1 RK_PA1 GPIO_ACTIVE_HIGH>; + pinctrl-0 = <&hdd_b_power_en>; + pinctrl-names = "default"; + regulator-always-on; + regulator-boot-on; + regulator-name = "hdd_b_power"; + startup-delay-us = <2000000>; + }; + pcie_power: pcie-power { compatible = "regulator-fixed"; enable-active-high; @@ -422,6 +446,14 @@ pmic_int_l: pmic-int-l { }; power { + hdd_a_power_en: hdd-a-power-en { + rockchip,pins = <1 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>; + }; + + hdd_b_power_en: hdd-b-power-en { + rockchip,pins = <1 RK_PA1 RK_FUNC_GPIO &pcfg_pull_none>; + }; + vcc5v0_usb_en: vcc5v0-usb-en { rockchip,pins = <1 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>; }; -- 2.33.0