From: Tony Lindgren <tony@atomide.com>
To: linux-omap@vger.kernel.org
Cc: Merlijn Wajer <merlijn@wizzup.org>, Pavel Machek <pavel@ucw.cz>,
linux-arm-kernel@lists.infradead.org,
Sebastian Reichel <sre@kernel.org>
Subject: [PATCH 1/2] ARM: OMAP2+: Configure voltage controller for retention
Date: Fri, 18 Oct 2019 15:21:06 -0700 [thread overview]
Message-ID: <20191018222107.32917-2-tony@atomide.com> (raw)
In-Reply-To: <20191018222107.32917-1-tony@atomide.com>
Similar to existing omap3_vc_set_pmic_signaling(), let's add omap4
specific omap4_vc_set_pmic_signaling(). This allows the configured
devices to enable voltage controller for retention later on during
init.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
arch/arm/mach-omap2/vc.c | 32 +++++++++++++++++++++++++++++---
arch/arm/mach-omap2/vc.h | 2 +-
2 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/vc.c b/arch/arm/mach-omap2/vc.c
--- a/arch/arm/mach-omap2/vc.c
+++ b/arch/arm/mach-omap2/vc.c
@@ -36,15 +36,21 @@
#define OMAP4430_AUTO_CTRL_VDD_CORE(x) ((x) << 0)
#define OMAP4430_AUTO_CTRL_VDD_RET 2
-#define OMAP4_VDD_DEFAULT_VAL \
+#define OMAP4430_VDD_I2C_DISABLE_MASK \
(OMAP4430_VDD_IVA_I2C_DISABLE | \
- OMAP4430_VDD_MPU_I2C_DISABLE | \
- OMAP4430_VDD_CORE_I2C_DISABLE | \
+ OMAP4430_VDD_MPU_I2C_DISABLE | \
+ OMAP4430_VDD_CORE_I2C_DISABLE)
+
+#define OMAP4_VDD_DEFAULT_VAL \
+ (OMAP4430_VDD_I2C_DISABLE_MASK | \
OMAP4430_VDD_IVA_PRESENCE | OMAP4430_VDD_MPU_PRESENCE | \
OMAP4430_AUTO_CTRL_VDD_IVA(OMAP4430_AUTO_CTRL_VDD_RET) | \
OMAP4430_AUTO_CTRL_VDD_MPU(OMAP4430_AUTO_CTRL_VDD_RET) | \
OMAP4430_AUTO_CTRL_VDD_CORE(OMAP4430_AUTO_CTRL_VDD_RET))
+#define OMAP4_VDD_RET_VAL \
+ (OMAP4_VDD_DEFAULT_VAL & ~OMAP4430_VDD_I2C_DISABLE_MASK)
+
/**
* struct omap_vc_channel_cfg - describe the cfg_channel bitfield
* @sa: bit for slave address
@@ -299,6 +305,26 @@ void omap3_vc_set_pmic_signaling(int core_next_state)
}
}
+void omap4_vc_set_pmic_signaling(int core_next_state)
+{
+ struct voltagedomain *vd = vc.vd;
+ u32 val;
+
+ if (!vd)
+ return;
+
+ switch (core_next_state) {
+ case PWRDM_POWER_RET:
+ val = OMAP4_VDD_RET_VAL;
+ break;
+ default:
+ val = OMAP4_VDD_DEFAULT_VAL;
+ break;
+ }
+
+ vd->write(val, OMAP4_PRM_VOLTCTRL_OFFSET);
+}
+
/*
* Configure signal polarity for sys_clkreq and sys_off_mode pins
* as the default values are wrong and can cause the system to hang
diff --git a/arch/arm/mach-omap2/vc.h b/arch/arm/mach-omap2/vc.h
--- a/arch/arm/mach-omap2/vc.h
+++ b/arch/arm/mach-omap2/vc.h
@@ -117,7 +117,7 @@ extern struct omap_vc_param omap4_iva_vc_data;
extern struct omap_vc_param omap4_core_vc_data;
void omap3_vc_set_pmic_signaling(int core_next_state);
-
+void omap4_vc_set_pmic_signaling(int core_next_state);
void omap_vc_init_channel(struct voltagedomain *voltdm);
int omap_vc_pre_scale(struct voltagedomain *voltdm,
--
2.23.0
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next prev parent reply other threads:[~2019-10-18 22:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 22:21 [PATCH 0/2] Better voltage controller configuration for droid4 Tony Lindgren
2019-10-18 22:21 ` Tony Lindgren [this message]
2019-10-18 22:21 ` [PATCH 2/2] ARM: OMAP2+: Configure voltage controller for cpcap to low-speed Tony Lindgren
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