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In LDO-enabled mode, HSRUN mode is not allowed, so add a check before configure PMPROT. Signed-off-by: Peng Fan --- arch/arm/mach-imx/pm-imx7ulp.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c index 2e756d8191fa..393faf1e8382 100644 --- a/arch/arm/mach-imx/pm-imx7ulp.c +++ b/arch/arm/mach-imx/pm-imx7ulp.c @@ -11,6 +11,10 @@ #include "common.h" +#define PMC0_CTRL 0x28 +#define BM_CTRL_LDOEN BIT(31) + +#define SMC_PMPROT 0x8 #define SMC_PMCTRL 0x10 #define BP_PMCTRL_PSTOPO 16 #define PSTOPO_PSTOP3 0x3 @@ -25,7 +29,10 @@ #define BM_PMCTRL_RUNM (3 << BP_PMCTRL_RUNM) #define BM_PMCTRL_STOPM (7 << BP_PMCTRL_STOPM) +#define BM_PMPROT_AHSRUN BIT(7) + static void __iomem *smc1_base; +static void __iomem *pmc0_base; int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode) { @@ -65,5 +72,13 @@ void __init imx7ulp_pm_init(void) of_node_put(np); WARN_ON(!smc1_base); + np = of_find_compatible_node(NULL, NULL, "fsl,imx7ulp-pmc0"); + pmc0_base = of_iomap(np, 0); + WARN_ON(!pmc0_base); + of_node_put(np); + + if (!(readl_relaxed(pmc0_base + PMC0_CTRL) & BM_CTRL_LDOEN)) + writel_relaxed(BM_PMPROT_AHSRUN, smc1_base + SMC_PMPROT); 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PTR:; CAT:NONE; SFS:(4636009)(366004)(52116002)(498600001)(2616005)(2906002)(6486002)(956004)(83380400001)(16576012)(36756003)(86362001)(8676002)(4326008)(66946007)(26005)(66476007)(66556008)(16526019)(186003)(9686003)(6666004)(8936002)(5660300002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 33d56087-e325-42a1-b60a-08d859ec0767 X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2020 02:55:54.6715 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: FORMuXKh1AI5rT3p+OLWwhdgmFKYj8lBBpQX4C8eBBfKEuhOGS/cii0xL4Luj++fWk+uJRwq9fI7qrMuIQ2C5Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB8PR04MB7177 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200915_225558_277186_1ABDD3A8 X-CRM114-Status: GOOD ( 16.35 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [40.107.20.61 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [40.107.20.61 listed in wl.mailspike.net] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aisheng.dong@nxp.com, devicetree@vger.kernel.org, Peng Fan , Anson.Huang@nxp.com, linux-kernel@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org From: Peng Fan When cpu runs in HSRUN mode, cpuidle is not allowed to run into Stop mode. So add imx7ulp_get_mode to get thr cpu run mode, and use WAIT mode instead, when cpu in HSRUN mode. Signed-off-by: Peng Fan Reviewed-by: Dong Aisheng --- arch/arm/mach-imx/common.h | 1 + arch/arm/mach-imx/cpuidle-imx7ulp.c | 14 +++++++++++--- arch/arm/mach-imx/pm-imx7ulp.c | 10 ++++++++++ 3 files changed, 22 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index 72c3fcc32910..707ac650f1c2 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -103,6 +103,7 @@ void imx6_set_int_mem_clk_lpm(bool enable); void imx6sl_set_wait_clk(bool enter); int imx_mmdc_get_ddr_type(void); int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode); +u32 imx7ulp_get_mode(void); void imx_cpu_die(unsigned int cpu); int imx_cpu_kill(unsigned int cpu); diff --git a/arch/arm/mach-imx/cpuidle-imx7ulp.c b/arch/arm/mach-imx/cpuidle-imx7ulp.c index ca86c967d19e..e7009d10b331 100644 --- a/arch/arm/mach-imx/cpuidle-imx7ulp.c +++ b/arch/arm/mach-imx/cpuidle-imx7ulp.c @@ -15,10 +15,18 @@ static int imx7ulp_enter_wait(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - if (index == 1) + u32 mode; + + if (index == 1) { imx7ulp_set_lpm(ULP_PM_WAIT); - else - imx7ulp_set_lpm(ULP_PM_STOP); + } else { + mode = imx7ulp_get_mode(); + + if (mode == 3) + imx7ulp_set_lpm(ULP_PM_WAIT); + else + imx7ulp_set_lpm(ULP_PM_STOP); + } cpu_do_idle(); diff --git a/arch/arm/mach-imx/pm-imx7ulp.c b/arch/arm/mach-imx/pm-imx7ulp.c index 393faf1e8382..1410ccfc71bd 100644 --- a/arch/arm/mach-imx/pm-imx7ulp.c +++ b/arch/arm/mach-imx/pm-imx7ulp.c @@ -63,6 +63,16 @@ int imx7ulp_set_lpm(enum ulp_cpu_pwr_mode mode) return 0; } +u32 imx7ulp_get_mode(void) +{ + u32 mode; + + mode = readl_relaxed(smc1_base + SMC_PMCTRL) & BM_PMCTRL_RUNM; + mode >>= BP_PMCTRL_RUNM; + + return mode; +} + void __init imx7ulp_pm_init(void) { struct device_node *np;