Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936286AbcLOM2x (ORCPT ); Thu, 15 Dec 2016 07:28:53 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:34956 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936020AbcLOM2r (ORCPT ); Thu, 15 Dec 2016 07:28:47 -0500 DMARC-Filter: OpenDMARC Filter v1.3.1 smtp.codeaurora.org A91A261564 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=pass 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 v5 6/7] remoteproc: qcom: Implement Hexagon core specific changes. Date: Thu, 15 Dec 2016 17:51:29 +0530 Message-Id: <1481804490-8583-7-git-send-email-akdwived@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1481804490-8583-1-git-send-email-akdwived@codeaurora.org> References: <1481804490-8583-1-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: 10089 Lines: 302 This change introduces appropriate additional steps in reset sequence and stop routine corresponding to hexagon v56 1.5.0 on mss for msm8996. Signed-off-by: Avaneesh Kumar Dwivedi --- .../devicetree/bindings/remoteproc/qcom,q6v5.txt | 1 + drivers/remoteproc/qcom_q6v5_pil.c | 179 ++++++++++++++++++--- 2 files changed, 155 insertions(+), 25 deletions(-) diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt index 674ebc6..06f51a6 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 1018b8f..fb04461 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -31,6 +31,7 @@ #include #include #include +#include #include "remoteproc_internal.h" #include "qcom_mdt_loader.h" @@ -65,6 +66,8 @@ #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 @@ -93,6 +96,15 @@ #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; @@ -111,6 +123,7 @@ struct rproc_hexagon_res { struct qcom_mss_reg_res active_supply[2]; char **proxy_clk_string; char **active_clk_string; + int hexagon_ver; }; struct q6v5 { @@ -152,8 +165,14 @@ struct q6v5 { phys_addr_t mpss_reloc; void *mpss_region; size_t mpss_size; + int hexagon_ver; }; +enum { + MSS_MSM8916, /*hexagon on msm8916*/ + MSS_MSM8974, /*hexagon on msm8974*/ + MSS_MSM8996, /*hexagon on msm8996*/ +}; static int q6v5_regulator_init(struct device *dev, struct reg_info *regs, const struct qcom_mss_reg_res *reg_res) @@ -341,35 +360,107 @@ static int q6v5_rmb_mba_wait(struct q6v5 *qproc, u32 status, int ms) static int q6v5proc_reset(struct q6v5 *qproc) { - u32 val; + u64 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->hexagon_ver == 0x2) { + /* 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); + 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; + } + if ((val & BIT(31))) { + dev_err(qproc->dev, + "Failed to enable xo branch clock.\n"); + return -EINVAL; + } + /* + * 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_relaxed(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); + /* + * 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); @@ -664,6 +755,7 @@ static int q6v5_stop(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; int ret; + int val; qproc->running = false; @@ -681,6 +773,15 @@ 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->hexagon_ver == 0x2) { + /* + * To avoid high MX current during LPASS/MSS restart. + */ + val = readl_relaxed(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_CLAMP_IO | QDSP6v56_CLAMP_WL | + QDSP6v56_CLAMP_QMC_MEM; + writel_relaxed(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); @@ -987,6 +1088,7 @@ static int q6v5_probe(struct platform_device *pdev) if (ret) goto free_rproc; + qproc->hexagon_ver = desc->hexagon_ver; ret = q6v5_request_irq(qproc, pdev, "wdog", q6v5_wdog_interrupt); if (ret < 0) goto free_rproc; @@ -1031,6 +1133,29 @@ 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[]) { + { + .supply = "mx", + }, + { + .supply = "cx", + .uA = 100000, + }, + { + .supply = "pll", + .uA = 100000, + }, + { NULL } + }, + .active_supply = (struct qcom_mss_reg_res[]) { { NULL }, { NULL } }, + .proxy_clk_string = (char*[]){"xo", "pnoc", "qdss", NULL}, + .active_clk_string = (char*[]){"iface", "bus", "mem", + "gpll0_mss_clk", "snoc_axi_clk", "mnoc_axi_clk", NULL}, + .hexagon_ver = MSS_MSM8996, +}; + static const struct rproc_hexagon_res msm8916_mss = { .hexagon_mba_image = "mba.mbn", .proxy_supply = (struct qcom_mss_reg_res[]) { @@ -1058,6 +1183,7 @@ static int q6v5_remove(struct platform_device *pdev) }, .proxy_clk_string = (char*[]){"xo", NULL}, .active_clk_string = (char*[]){"iface", "bus", "mem", NULL}, + .hexagon_ver = MSS_MSM8916, }; static const struct rproc_hexagon_res msm8974_mss = { @@ -1087,11 +1213,14 @@ static int q6v5_remove(struct platform_device *pdev) }, .proxy_clk_string = (char*[]){"xo", NULL}, .active_clk_string = (char*[]){"iface", "bus", "mem", NULL}, + .hexagon_ver = MSS_MSM8974, }; + static const struct of_device_id q6v5_of_match[] = { { .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}, { }, }; -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.