From nobody Mon Feb 9 07:44:02 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1612289338; cv=none; d=zohomail.com; s=zohoarc; b=OLmbf+lbRdAltKYx+qJ/l7s/S5bEOU40B+QC+mqtk37br1dSau6v3vluAufmir0JZ7zUFOVV29Rpb9u75rVkKEpH0JVCaP3m5aXo3Ip9L8Un3ok2tQKoYlHEla7QZauir1vGCQtodlQSC+ST4lNWKoAhK6xhwNG5RbmuCofIq8o= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1612289338; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=27Rh1jJu3IIjx0wRzmqZIBv/kPP940w8NfRpD/N/7g8=; b=kEKrVouN2x8NCwUNVXmjDFSsSoufFk+HKFRiponVbuj4pLF2OW2hbXn2/yTTSsW94F2WRRGbs/q628sZZXCYThWS9S638dhbOBCadoMce6uBk+EWctElmris5xWrogxF2bRRvkNIQyJKF8GlaLwY5Nwb0+NgJ6abXKG0OaMNLv4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1612289338087928.7193458483732; Tue, 2 Feb 2021 10:08:58 -0800 (PST) Received: from localhost ([::1]:38702 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l706i-00028r-Sg for importer@patchew.org; Tue, 02 Feb 2021 13:08:56 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:45488) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6zty-0005SZ-Eq for qemu-devel@nongnu.org; Tue, 02 Feb 2021 12:55:46 -0500 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]:43386) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l6ztk-0002GO-Ub for qemu-devel@nongnu.org; Tue, 02 Feb 2021 12:55:46 -0500 Received: by mail-wr1-x42e.google.com with SMTP id z6so21371052wrq.10 for ; Tue, 02 Feb 2021 09:55:28 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id q6sm4142283wmj.32.2021.02.02.09.55.26 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Feb 2021 09:55:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=27Rh1jJu3IIjx0wRzmqZIBv/kPP940w8NfRpD/N/7g8=; b=PgGUeMS2ZoNbpF5CSKdE/Bk6miR+qDCaGIfNYI3UZq5PSdQciu6NQniR2+xkItRgra 2pJwnupch/8PldOiwTL9zDldUjU+qcWFkBvI3wLksXYH7ebSfESpFcMWCErFXaX6PECv 7Wvi/hjdKaeNJtjzu6y/OVvDuIUcJ69LpGXGBtegpTjM2iJyBV1qi9tHpZNzPwI2+/md dhksumrqq1atU/nu6Stb4KWkuHcfYLoETdFO1RT/9stiGqANOU2NOieEHPhiAI+r1jsL RinXAhso7E/gHyaX1n5moezT9L3OD/x8Da0zVbbj273uoUQwtKw8JlFAcuFJdChowdx0 TNtQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=27Rh1jJu3IIjx0wRzmqZIBv/kPP940w8NfRpD/N/7g8=; b=XC5W4dpVdtIHsnTcw3yPvrmU1ec3T3QyNZcjZu1IqGvCLLlNfJjx4Rkfwhjscy+0Gi REQcrDhpd1cvjy8EJglA0rAZF0307sDn8kOTMbq4FRg5x3Bbhy3VrtBDJZxUa1HJgJ26 4a67uqkcc4pgTkPNpDFOvK88OcgCGfCche6v2f6Vgp+2cVnzXbYKYaZnS9UUBtxhrYES a/wqZ+c4ZQBiZznAL4Vv2R7D0z9U2AdENBH+SNRUksK8N4lWKBVdavgUMK75Pt9ljlI8 Dqv3VCuqfNQFKzcdctrkWM6WW6+8tVrSUQ0Uxt0bzHfHUd88ssRAB+e+HvBZCOtolybb Pxmw== X-Gm-Message-State: AOAM531GzPt5ZhDAZV6LWi3hq9hUb5b73IsdGx7XtnrXo49AT8fynZbV L9kpr1rxGxUpmGZSxApf/PCGGzQDyX7JNg== X-Google-Smtp-Source: ABdhPJy4raWghb0Lfl/9VnRhkx0HLTY6H4MLT2GJmZnzn0Y6ww36amFcNfrEmnqkevpm8CIBuXgXlw== X-Received: by 2002:a5d:4b47:: with SMTP id w7mr25173344wrs.194.1612288527775; Tue, 02 Feb 2021 09:55:27 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 08/21] hw/ssi: imx_spi: Rework imx_spi_reset() to keep CONREG register value Date: Tue, 2 Feb 2021 17:55:04 +0000 Message-Id: <20210202175517.28729-9-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210202175517.28729-1-peter.maydell@linaro.org> References: <20210202175517.28729-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) From: Philippe Mathieu-Daud=C3=A9 When the block is disabled, all registers are reset with the exception of the ECSPI_CONREG. It is initialized to zero when the instance is created. Ref: i.MX 6DQ Applications Processor Reference Manual (IMX6DQRM), chapter 21.7.3: Control Register (ECSPIx_CONREG) Signed-off-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Bin Meng Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-id: 20210129132323.30946-5-bmeng.cn@gmail.com [bmeng: add a 'common_reset' function that does most of reset operation] Signed-off-by: Bin Meng Signed-off-by: Peter Maydell --- hw/ssi/imx_spi.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-) diff --git a/hw/ssi/imx_spi.c b/hw/ssi/imx_spi.c index 8fb3c9b6d1b..e85be6ae607 100644 --- a/hw/ssi/imx_spi.c +++ b/hw/ssi/imx_spi.c @@ -228,15 +228,23 @@ static void imx_spi_flush_txfifo(IMXSPIState *s) fifo32_num_used(&s->tx_fifo), fifo32_num_used(&s->rx_fifo)); } =20 -static void imx_spi_reset(DeviceState *dev) +static void imx_spi_common_reset(IMXSPIState *s) { - IMXSPIState *s =3D IMX_SPI(dev); + int i; =20 - DPRINTF("\n"); - - memset(s->regs, 0, sizeof(s->regs)); - - s->regs[ECSPI_STATREG] =3D 0x00000003; + for (i =3D 0; i < ARRAY_SIZE(s->regs); i++) { + switch (i) { + case ECSPI_CONREG: + /* CONREG is not updated on soft reset */ + break; + case ECSPI_STATREG: + s->regs[i] =3D 0x00000003; + break; + default: + s->regs[i] =3D 0; + break; + } + } =20 imx_spi_rxfifo_reset(s); imx_spi_txfifo_reset(s); @@ -246,11 +254,19 @@ static void imx_spi_reset(DeviceState *dev) =20 static void imx_spi_soft_reset(IMXSPIState *s) { - imx_spi_reset(DEVICE(s)); + imx_spi_common_reset(s); =20 imx_spi_update_irq(s); } =20 +static void imx_spi_reset(DeviceState *dev) +{ + IMXSPIState *s =3D IMX_SPI(dev); + + imx_spi_common_reset(s); + s->regs[ECSPI_CONREG] =3D 0; +} + static uint64_t imx_spi_read(void *opaque, hwaddr offset, unsigned size) { uint32_t value =3D 0; --=20 2.20.1