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From: peng.fan@nxp.com
To: shawnguo@kernel.org, s.hauer@pengutronix.de, sboyd@kernel.org,
	robh+dt@kernel.org, viresh.kumar@linaro.org, rjw@rjwysocki.net
Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
	Anson.Huang@nxp.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, abel.vesa@nxp.com,
	Peng Fan <peng.fan@nxp.com>
Subject: [PATCH v2 08/14] ARM: imx: imx7ulp: support HSRUN mode
Date: Wed, 19 Feb 2020 15:59:51 +0800	[thread overview]
Message-ID: <1582099197-20327-9-git-send-email-peng.fan@nxp.com> (raw)
In-Reply-To: <1582099197-20327-1-git-send-email-peng.fan@nxp.com>

From: Peng Fan <peng.fan@nxp.com>

Configure PMPROT to let ARM core could run into HSRUN mode.
In LDO-enabled mode, HSRUN mode is not allowed, so add a check before
configure PMPROT.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 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);
+
 	imx7ulp_set_lpm(ULP_PM_RUN);
 }
-- 
2.16.4


WARNING: multiple messages have this Message-ID (diff)
From: peng.fan@nxp.com
To: shawnguo@kernel.org, s.hauer@pengutronix.de, sboyd@kernel.org,
	robh+dt@kernel.org, viresh.kumar@linaro.org, rjw@rjwysocki.net
Cc: Peng Fan <peng.fan@nxp.com>,
	abel.vesa@nxp.com, Anson.Huang@nxp.com,
	linux-kernel@vger.kernel.org, linux-imx@nxp.com,
	kernel@pengutronix.de, festevam@gmail.com,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 08/14] ARM: imx: imx7ulp: support HSRUN mode
Date: Wed, 19 Feb 2020 15:59:51 +0800	[thread overview]
Message-ID: <1582099197-20327-9-git-send-email-peng.fan@nxp.com> (raw)
In-Reply-To: <1582099197-20327-1-git-send-email-peng.fan@nxp.com>

From: Peng Fan <peng.fan@nxp.com>

Configure PMPROT to let ARM core could run into HSRUN mode.
In LDO-enabled mode, HSRUN mode is not allowed, so add a check before
configure PMPROT.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 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);
+
 	imx7ulp_set_lpm(ULP_PM_RUN);
 }
-- 
2.16.4


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-02-19  8:06 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-19  7:59 [PATCH v2 00/14] ARM: imx7ulp: add cpufreq using cpufreq-dt peng.fan
2020-02-19  7:59 ` peng.fan
2020-02-19  7:59 ` [PATCH v2 01/14] dt-bindings: fsl: add i.MX7ULP PMC binding doc peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  5:49   ` Shawn Guo
2020-03-10  5:49     ` Shawn Guo
2020-03-10  5:56     ` Peng Fan
2020-03-10  5:56       ` Peng Fan
2020-03-11  7:39   ` Peng Fan
2020-03-11  7:39     ` Peng Fan
2020-03-11  7:39     ` Peng Fan
2020-02-19  7:59 ` [PATCH v2 02/14] ARM: dts: imx7ulp: add pmc node peng.fan
2020-02-19  7:59   ` peng.fan
2020-02-19  7:59 ` [PATCH v2 03/14] clk: imx: Fix division by zero warning on pfdv2 peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  5:53   ` Shawn Guo
2020-03-10  5:53     ` Shawn Guo
2020-02-19  7:59 ` [PATCH v2 04/14] clk: imx: pfdv2: switch to use determine_rate peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  6:02   ` Shawn Guo
2020-03-10  6:02     ` Shawn Guo
2020-02-19  7:59 ` [PATCH v2 05/14] clk: imx: pfdv2: determine best parent rate peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  6:04   ` Shawn Guo
2020-03-10  6:04     ` Shawn Guo
2020-02-19  7:59 ` [PATCH v2 06/14] clk: imx: pllv4: use prepare/unprepare peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  6:04   ` Shawn Guo
2020-03-10  6:04     ` Shawn Guo
2020-02-19  7:59 ` [PATCH v2 07/14] clk: imx7ulp: make it easy to change ARM core clk peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  6:09   ` Shawn Guo
2020-03-10  6:09     ` Shawn Guo
2020-03-10  6:19     ` Peng Fan
2020-03-10  6:19       ` Peng Fan
2020-02-19  7:59 ` peng.fan [this message]
2020-02-19  7:59   ` [PATCH v2 08/14] ARM: imx: imx7ulp: support HSRUN mode peng.fan
2020-02-19  7:59 ` [PATCH v2 09/14] ARM: imx: cpuidle-imx7ulp: Stop mode disallowed when HSRUN peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-10  6:13   ` Shawn Guo
2020-03-10  6:13     ` Shawn Guo
2020-03-10  7:35     ` Peng Fan
2020-03-10  7:35       ` Peng Fan
2020-02-19  7:59 ` [PATCH v2 10/14] cpufreq: dt: Allow platform specific intermediate callbacks peng.fan
2020-02-19  7:59   ` peng.fan
2020-02-19  9:35   ` Viresh Kumar
2020-02-19  9:35     ` Viresh Kumar
2020-02-19  9:41     ` Peng Fan
2020-02-19  9:41       ` Peng Fan
2020-02-19  9:45       ` Viresh Kumar
2020-02-19  9:45         ` Viresh Kumar
2020-02-19  9:46   ` Viresh Kumar
2020-02-19  9:46     ` Viresh Kumar
2020-02-19  9:55     ` Peng Fan
2020-02-19  9:55       ` Peng Fan
2020-03-12 10:15   ` Viresh Kumar
2020-03-12 10:15     ` Viresh Kumar
2020-02-19  7:59 ` [PATCH v2 11/14] cpufreq: Add i.MX7ULP to cpufreq-dt-platdev blacklist peng.fan
2020-02-19  7:59   ` peng.fan
2020-02-19  7:59 ` [PATCH v2 12/14] cpufreq: imx-cpufreq-dt: support i.MX7ULP peng.fan
2020-02-19  7:59   ` peng.fan
2020-02-19  7:59 ` [PATCH v2 13/14] ARM: imx7ulp: enable cpufreq peng.fan
2020-02-19  7:59   ` peng.fan
2020-02-19  7:59 ` [PATCH v2 14/14] [Do not Apply] ARM: dts: imx7ulp: add cpu OPP points peng.fan
2020-02-19  7:59   ` peng.fan
2020-03-02  1:40 ` [PATCH v2 00/14] ARM: imx7ulp: add cpufreq using cpufreq-dt Peng Fan
2020-03-02  1:40   ` Peng Fan
2020-03-02 17:48   ` Fabio Estevam
2020-03-02 17:48     ` Fabio Estevam
2020-03-03  1:08     ` Peng Fan
2020-03-03  1:08       ` Peng Fan

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