From: Keerthy <j-keerthy@ti.com>
To: <tony@atomide.com>, <broonie@kernel.org>, <devicetree@vger.kernel.org>
Cc: <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<t-kristo@ti.com>, <russ.dill@ti.com>, <robh+dt@kernel.org>,
<mark.rutland@arm.com>, <j-keerthy@ti.com>,
<linux@armlinux.org.uk>, Dave Gerlach <d-gerlach@ti.com>
Subject: [PATCH 8/9] regulator: tps65218: do not disable DCDC3 during poweroff on broken PMICs
Date: Mon, 20 Jun 2016 14:13:37 +0530 [thread overview]
Message-ID: <1466412218-5906-9-git-send-email-j-keerthy@ti.com> (raw)
In-Reply-To: <1466412218-5906-1-git-send-email-j-keerthy@ti.com>
From: Tero Kristo <t-kristo@ti.com>
Some versions of tps65218 do not seem to support poweroff modes properly
if DCDC3 regulator is shut-down. Thus, keep it enabled even during
poweroff if the version info matches the broken silicon revision.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/regulator/tps65218-regulator.c | 8 ++++++++
include/linux/mfd/tps65218.h | 5 +++++
2 files changed, 13 insertions(+)
diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
index d1e631d..eb0f5b1 100644
--- a/drivers/regulator/tps65218-regulator.c
+++ b/drivers/regulator/tps65218-regulator.c
@@ -180,6 +180,14 @@ static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
return -EINVAL;
+ /*
+ * Certain revisions of TPS65218 will need to have DCDC3 regulator
+ * enabled always, otherwise an immediate system reboot will occur
+ * during poweroff.
+ */
+ if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
+ return 0;
+
if (!tps->info[rid]->strobe) {
if (rid == TPS65218_DCDC_3)
tps->info[rid]->strobe = 3;
diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
index 85e464e..d1db952 100644
--- a/include/linux/mfd/tps65218.h
+++ b/include/linux/mfd/tps65218.h
@@ -63,6 +63,11 @@
#define TPS65218_CHIPID_CHIP_MASK 0xF8
#define TPS65218_CHIPID_REV_MASK 0x07
+#define TPS65218_REV_1_0 0x0
+#define TPS65218_REV_1_1 0x1
+#define TPS65218_REV_2_0 0x2
+#define TPS65218_REV_2_1 0x3
+
#define TPS65218_INT1_VPRG BIT(5)
#define TPS65218_INT1_AC BIT(4)
#define TPS65218_INT1_PB BIT(3)
--
1.9.1
next prev parent reply other threads:[~2016-06-20 8:50 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-20 8:43 [PATCH 0/9] regulator: Enable suspend configuration Keerthy
2016-06-20 8:43 ` [PATCH 1/9] regulator: tps65217: " Keerthy
2016-06-21 19:08 ` Mark Brown
2016-06-22 10:14 ` Keerthy
2016-06-22 10:16 ` Mark Brown
2016-06-22 10:26 ` Keerthy
2016-06-23 10:26 ` Mark Brown
2016-06-23 10:32 ` Keerthy
2016-06-20 8:43 ` [PATCH 2/9] regulator: of: setup initial suspend state Keerthy
2016-06-22 15:29 ` Applied "regulator: of: setup initial suspend state" to the regulator tree Mark Brown
2016-06-20 8:43 ` [PATCH 3/9] regulator: tps65218: Enable suspend configuration Keerthy
2016-06-27 17:00 ` Applied "regulator: tps65218: Enable suspend configuration" to the regulator tree Mark Brown
2016-06-20 8:43 ` [PATCH 4/9] ARM: dts: AM437X-GP-EVM: AM437X-SK-EVM: Make dcdc3 dcdc5 and dcdc6 enable during suspend Keerthy
2016-06-21 11:43 ` Tony Lindgren
2016-06-21 11:46 ` Tony Lindgren
2016-06-20 8:43 ` [PATCH 5/9] regulator: tps65218: force set power-up/down strobe to 3 for dcdc3 Keerthy
2016-06-27 17:00 ` Applied "regulator: tps65218: force set power-up/down strobe to 3 for dcdc3" to the regulator tree Mark Brown
2016-06-20 8:43 ` [PATCH 6/9] ARM: dts: am437x-gp-evm: disable DDR regulator in rtc-only/poweroff mode Keerthy
2016-06-20 8:43 ` [PATCH 7/9] mfd: tps65218: add version check to the PMIC probe Keerthy
2016-06-20 8:45 ` Keerthy
2016-08-10 20:04 ` Applied "mfd: tps65218: add version check to the PMIC probe" to the regulator tree Mark Brown
2016-08-31 8:31 ` Lee Jones
2016-08-31 11:41 ` Mark Brown
2016-08-31 14:50 ` Lee Jones
2016-08-31 16:02 ` Mark Brown
2016-09-01 8:23 ` Lee Jones
2016-09-01 8:54 ` Mark Brown
2016-09-01 9:34 ` Lee Jones
2016-08-31 17:57 ` Russell King - ARM Linux
2016-09-01 8:18 ` Lee Jones
2016-09-01 10:17 ` Russell King - ARM Linux
2016-09-01 11:19 ` Lee Jones
2016-09-01 14:23 ` Russell King - ARM Linux
2016-09-01 14:53 ` Lee Jones
2016-06-20 8:43 ` Keerthy [this message]
2016-08-10 20:04 ` Applied "regulator: tps65218: do not disable DCDC3 during poweroff on broken PMICs" " Mark Brown
2016-08-31 15:01 ` Lee Jones
2016-09-01 10:06 ` Mark Brown
2016-06-20 8:43 ` [PATCH 9/9] ARM: dts: am437x-sk-evm: disable DDR regulator in rtc-only/poweroff mode Keerthy
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