Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754193AbdCHSz7 (ORCPT ); Wed, 8 Mar 2017 13:55:59 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:32918 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752998AbdCHSzy (ORCPT ); Wed, 8 Mar 2017 13:55:54 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 62E2360766 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=akdwived@codeaurora.org From: Avaneesh Kumar Dwivedi To: bjorn.andersson@linaro.org Cc: sboyd@codeaurora.org, agross@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, Avaneesh Kumar Dwivedi Subject: [PATCH v3 2/2] remoteproc: qcom: Enable mss rproc support on msm8996 Date: Wed, 8 Mar 2017 23:33:22 +0530 Message-Id: <1488996202-1546-3-git-send-email-akdwived@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1488996202-1546-1-git-send-email-akdwived@codeaurora.org> References: <1488996202-1546-1-git-send-email-akdwived@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8490 Lines: 248 This patch add msm8996 mss reset sequence and other minor changes for enabling mss rproc support. Signed-off-by: Avaneesh Kumar Dwivedi --- .../devicetree/bindings/remoteproc/qcom,q6v5.txt | 1 + drivers/remoteproc/qcom_q6v5_pil.c | 161 ++++++++++++++++++--- 2 files changed, 138 insertions(+), 24 deletions(-) diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt index 92347fe..f37b0da 100644 --- a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt +++ b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt @@ -10,6 +10,7 @@ on the Qualcomm Hexagon core. "qcom,q6v5-pil", "qcom,msm8916-mss-pil", "qcom,msm8974-mss-pil" + "qcom,msm8996-mss-pil" - reg: Usage: required diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index 62ad976..1676cd7 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "remoteproc_internal.h" #include "qcom_common.h" @@ -64,6 +65,8 @@ #define QDSP6SS_RESET_REG 0x014 #define QDSP6SS_GFMUX_CTL_REG 0x020 #define QDSP6SS_PWR_CTL_REG 0x030 +#define QDSP6SS_MEM_PWR_CTL 0x0B0 +#define QDSP6SS_STRAP_ACC 0x110 /* AXI Halt Register Offsets */ #define AXI_HALTREQ_REG 0x0 @@ -92,6 +95,14 @@ #define QDSS_BHS_ON BIT(21) #define QDSS_LDO_BYP BIT(22) +/* QDSP6v56 parameters */ +#define QDSP6v56_LDO_BYP BIT(25) +#define QDSP6v56_BHS_ON BIT(24) +#define QDSP6v56_CLAMP_WL BIT(21) +#define QDSP6v56_CLAMP_QMC_MEM BIT(22) +#define HALT_CHECK_MAX_LOOPS 200 +#define QDSP6SS_XO_CBCR 0x0038 +#define QDSP6SS_ACC_OVERRIDE_VAL 0x20 struct reg_info { struct regulator *reg; int uV; @@ -421,33 +432,97 @@ static int q6v5proc_reset(struct q6v5 *qproc) { u32 val; int ret; + int i; - /* Assert resets, stop core */ - val = readl(qproc->reg_base + QDSP6SS_RESET_REG); - val |= (Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE); - writel(val, qproc->reg_base + QDSP6SS_RESET_REG); - /* Enable power block headswitch, and wait for it to stabilize */ - val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); - val |= QDSS_BHS_ON | QDSS_LDO_BYP; - writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); - udelay(1); - - /* - * Turn on memories. L2 banks should be done individually - * to minimize inrush current. - */ - val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); - val |= Q6SS_SLP_RET_N | Q6SS_L2TAG_SLP_NRET_N | - Q6SS_ETB_SLP_NRET_N | Q6SS_L2DATA_STBY_N; - writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); - val |= Q6SS_L2DATA_SLP_NRET_N_2; - writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); - val |= Q6SS_L2DATA_SLP_NRET_N_1; - writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); - val |= Q6SS_L2DATA_SLP_NRET_N_0; - writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + if (qproc->version == MSS_MSM8996) { + /* Override the ACC value if required */ + writel(QDSP6SS_ACC_OVERRIDE_VAL, + qproc->reg_base + QDSP6SS_STRAP_ACC); + + /* Assert resets, stop core */ + val = readl(qproc->reg_base + QDSP6SS_RESET_REG); + val |= Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE; + writel(val, qproc->reg_base + QDSP6SS_RESET_REG); + /* BHS require xo cbcr to be enabled */ + val = readl(qproc->reg_base + QDSP6SS_XO_CBCR); + val |= 0x1; + writel(val, qproc->reg_base + QDSP6SS_XO_CBCR); + + /* Read CLKOFF bit to go low indicating CLK is enabled */ + ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR, + val, !(val & BIT(31)), 1, HALT_CHECK_MAX_LOOPS); + if (ret) { + dev_err(qproc->dev, + "xo cbcr enabling timed out (rc:%d)\n", ret); + return ret; + } + /* Enable power block headswitch and wait for it to stabilize */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= QDSP6v56_BHS_ON; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + udelay(1); + + /* Put LDO in bypass mode */ + val |= QDSP6v56_LDO_BYP; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* Deassert QDSP6 compiler memory clamp */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val &= ~QDSP6v56_CLAMP_QMC_MEM; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* Deassert memory peripheral sleep and L2 memory standby */ + val |= Q6SS_L2DATA_STBY_N | Q6SS_SLP_RET_N; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* Turn on L1, L2, ETB and JU memories 1 at a time */ + val = readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL); + for (i = 19; i >= 0; i--) { + val |= BIT(i); + writel(val, qproc->reg_base + + QDSP6SS_MEM_PWR_CTL); + /* + * Read back value to ensure the write is done then + * wait for 1us for both memory peripheral and data + * array to turn on. + */ + val |= readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL); + udelay(1); + } + /* Remove word line clamp */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val &= ~QDSP6v56_CLAMP_WL; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + } else { + /* Assert resets, stop core */ + val = readl(qproc->reg_base + QDSP6SS_RESET_REG); + val |= Q6SS_CORE_ARES | Q6SS_BUS_ARES_ENABLE | Q6SS_STOP_CORE; + writel(val, qproc->reg_base + QDSP6SS_RESET_REG); + + /* Enable power block headswitch and wait for it to stabilize */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= QDSS_BHS_ON | QDSS_LDO_BYP; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + udelay(1); + /* + * Turn on memories. L2 banks should be done individually + * to minimize inrush current. + */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_SLP_RET_N | Q6SS_L2TAG_SLP_NRET_N | + Q6SS_ETB_SLP_NRET_N | Q6SS_L2DATA_STBY_N; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_L2DATA_SLP_NRET_N_2; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_L2DATA_SLP_NRET_N_1; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_L2DATA_SLP_NRET_N_0; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + } /* Remove IO clamp */ val &= ~Q6SS_CLAMP_IO; writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); @@ -823,6 +898,7 @@ static int q6v5_stop(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; int ret; + u32 val; qproc->running = false; @@ -840,6 +916,15 @@ static int q6v5_stop(struct rproc *rproc) q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc); + if (qproc->version == MSS_MSM8996) { + /* + * To avoid high MX current during LPASS/MSS restart. + */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_CLAMP_IO | QDSP6v56_CLAMP_WL | + QDSP6v56_CLAMP_QMC_MEM; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + } reset_control_assert(qproc->mss_restart); q6v5_clk_disable(qproc->dev, qproc->active_clks, qproc->active_clk_count); @@ -1186,6 +1271,33 @@ static int q6v5_remove(struct platform_device *pdev) return 0; } +static const struct rproc_hexagon_res msm8996_mss = { + .hexagon_mba_image = "mba.mbn", + .proxy_supply = (struct qcom_mss_reg_res[]) { + {} + }, + .active_supply = (struct qcom_mss_reg_res[]) { + {}, + {} + }, + .proxy_clk_names = (char*[]){ + "xo", + "pnoc", + "qdss", + NULL + }, + .active_clk_names = (char*[]){ + "iface", + "bus", + "mem", + "gpll0_mss_clk", + "snoc_axi_clk", + "mnoc_axi_clk", + NULL + }, + .version = MSS_MSM8996, +}; + static const struct rproc_hexagon_res msm8916_mss = { .hexagon_mba_image = "mba.mbn", .proxy_supply = (struct qcom_mss_reg_res[]) { @@ -1258,6 +1370,7 @@ static int q6v5_remove(struct platform_device *pdev) { .compatible = "qcom,q6v5-pil", .data = &msm8916_mss}, { .compatible = "qcom,msm8916-mss-pil", .data = &msm8916_mss}, { .compatible = "qcom,msm8974-mss-pil", .data = &msm8974_mss}, + { .compatible = "qcom,msm8996-mss-pil", .data = &msm8996_mss}, { }, }; MODULE_DEVICE_TABLE(of, q6v5_of_match); -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.