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From: Sowjanya Komatineni <skomatineni@nvidia.com>
To: <thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<tglx@linutronix.de>, <jason@lakedaemon.net>,
	<marc.zyngier@arm.com>, <linus.walleij@linaro.org>,
	<stefan@agner.ch>, <mark.rutland@arm.com>
Cc: <pdeschrijver@nvidia.com>, <pgaikwad@nvidia.com>,
	<sboyd@kernel.org>, <linux-clk@vger.kernel.org>,
	<linux-gpio@vger.kernel.org>, <jckuo@nvidia.com>,
	<josephl@nvidia.com>, <talho@nvidia.com>,
	<skomatineni@nvidia.com>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <mperttunen@nvidia.com>,
	<spatra@nvidia.com>, <robh+dt@kernel.org>, <digetx@gmail.com>,
	<devicetree@vger.kernel.org>
Subject: [PATCH V6 18/21] soc/tegra: pmc: Configure core power request polarity
Date: Sun, 21 Jul 2019 12:40:57 -0700	[thread overview]
Message-ID: <1563738060-30213-19-git-send-email-skomatineni@nvidia.com> (raw)
In-Reply-To: <1563738060-30213-1-git-send-email-skomatineni@nvidia.com>

This patch configures polarity of the core power request signal
in PMC control register based on the device tree property.

PMC asserts and de-asserts power request signal based on it polarity
when it need to power-up and power-down the core rail during SC7.

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
 drivers/soc/tegra/pmc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soc/tegra/pmc.c b/drivers/soc/tegra/pmc.c
index c556f38874e1..7521394b94ab 100644
--- a/drivers/soc/tegra/pmc.c
+++ b/drivers/soc/tegra/pmc.c
@@ -56,6 +56,7 @@
 #define  PMC_CNTRL_SIDE_EFFECT_LP0	BIT(14) /* LP0 when CPU pwr gated */
 #define  PMC_CNTRL_SYSCLK_OE		BIT(11) /* system clock enable */
 #define  PMC_CNTRL_SYSCLK_POLARITY	BIT(10) /* sys clk polarity */
+#define  PMC_CNTRL_PWRREQ_POLARITY	BIT(8)
 #define  PMC_CNTRL_MAIN_RST		BIT(4)
 #define  PMC_CNTRL_LATCH_WAKEUPS	BIT(5)
 
@@ -2303,6 +2304,11 @@ static void tegra20_pmc_init(struct tegra_pmc *pmc)
 	else
 		value |= PMC_CNTRL_SYSCLK_POLARITY;
 
+	if (pmc->corereq_high)
+		value &= ~PMC_CNTRL_PWRREQ_POLARITY;
+	else
+		value |= PMC_CNTRL_PWRREQ_POLARITY;
+
 	/* configure the output polarity while the request is tristated */
 	tegra_pmc_writel(pmc, value, PMC_CNTRL);
 
-- 
2.7.4


  parent reply	other threads:[~2019-07-21 19:41 UTC|newest]

Thread overview: 84+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-21 19:40 [PATCH V6 00/21] SC7 entry and exit support for Tegra210 Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 01/21] irqchip: tegra: Do not disable COP IRQ during suspend Sowjanya Komatineni
2019-07-21 20:24   ` Marc Zyngier
2019-07-22  9:54   ` Dmitry Osipenko
2019-07-22 10:13     ` Marc Zyngier
2019-07-22 10:57       ` Dmitry Osipenko
2019-07-22 16:21         ` Sowjanya Komatineni
2019-07-22 18:38           ` Marc Zyngier
2019-07-22 23:35             ` Dmitry Osipenko
2019-07-24 23:09               ` Sowjanya Komatineni
2019-07-26  4:48                 ` Dmitry Osipenko
2019-07-25  9:55     ` Peter De Schrijver
2019-07-25 10:05       ` Dmitry Osipenko
2019-07-25 10:33         ` Peter De Schrijver
2019-07-25 10:38           ` Peter De Schrijver
2019-07-25 10:59             ` Dmitry Osipenko
2019-08-02 13:05               ` Peter De Schrijver
2019-08-02 17:35                 ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 02/21] pinctrl: tegra: Add suspend and resume support Sowjanya Komatineni
2019-07-21 22:03   ` Dmitry Osipenko
2019-07-21 22:09     ` Dmitry Osipenko
2019-07-21 22:48       ` Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 03/21] pinctrl: tegra210: Add Tegra210 pinctrl pm ops Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 04/21] clk: tegra: Save and restore divider rate Sowjanya Komatineni
2019-07-21 22:14   ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 05/21] clk: tegra: pllout: Save and restore pllout context Sowjanya Komatineni
2019-07-21 22:18   ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 06/21] clk: tegra: pll: Save and restore pll context Sowjanya Komatineni
2019-07-21 21:44   ` Dmitry Osipenko
2019-07-21 22:47     ` Sowjanya Komatineni
2019-07-21 22:21   ` Dmitry Osipenko
2019-07-22  3:22     ` Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 07/21] clk: tegra: Support for OSC context save and restore Sowjanya Komatineni
2019-07-22 10:12   ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 08/21] clk: tegra: clk-periph: Add save and restore support Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 09/21] clk: tegra: clk-super: Fix to enable PLLP branches to CPU Sowjanya Komatineni
2019-07-21 21:16   ` Dmitry Osipenko
2019-07-21 22:39     ` Sowjanya Komatineni
2019-07-22  3:17       ` Sowjanya Komatineni
2019-07-22  6:32         ` Dmitry Osipenko
2019-07-22  7:12           ` Sowjanya Komatineni
2019-07-22  7:17             ` Dmitry Osipenko
2019-07-22  7:24               ` Sowjanya Komatineni
2019-07-22  7:30                 ` Dmitry Osipenko
2019-07-22  7:36                   ` Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 10/21] clk: tegra: clk-super: Add save and restore support Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 11/21] clk: tegra: clk-dfll: Add suspend and resume support Sowjanya Komatineni
2019-07-21 21:32   ` Dmitry Osipenko
2019-07-21 22:42     ` Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 12/21] cpufreq: tegra124: " Sowjanya Komatineni
2019-07-21 21:04   ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 13/21] clk: tegra210: Use fence_udelay during PLLU init Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 14/21] clk: tegra210: Add suspend and resume support Sowjanya Komatineni
2019-07-21 21:38   ` Dmitry Osipenko
2019-07-21 22:45     ` Sowjanya Komatineni
2019-07-22  6:10       ` Dmitry Osipenko
2019-07-22  6:52         ` Sowjanya Komatineni
2019-07-22  7:09           ` Dmitry Osipenko
2019-07-22  7:12             ` Dmitry Osipenko
2019-08-02 17:51               ` Stephen Boyd
2019-08-02 20:39                 ` Sowjanya Komatineni
2019-08-07 21:22                   ` Stephen Boyd
2019-07-21 19:40 ` [PATCH V6 15/21] soc/tegra: pmc: Allow to support more tegras wake Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 16/21] soc/tegra: pmc: Add pmc wake support for tegra210 Sowjanya Komatineni
2019-07-23  0:58   ` Dmitry Osipenko
2019-07-23  1:08     ` Dmitry Osipenko
2019-07-23  1:41       ` Dmitry Osipenko
2019-07-23  1:52         ` Dmitry Osipenko
2019-07-23  2:10           ` Dmitry Osipenko
     [not found]         ` <71a88a9c-a542-557a-0eaa-3c90112dee0e@nvidia.com>
2019-07-23  3:03           ` Dmitry Osipenko
2019-07-23  3:09             ` Sowjanya Komatineni
2019-07-23  3:25               ` Dmitry Osipenko
2019-07-23  3:31                 ` Sowjanya Komatineni
2019-07-23  3:43                   ` Dmitry Osipenko
2019-07-23 14:27                     ` Dmitry Osipenko
2019-07-23 23:39                       ` Sowjanya Komatineni
2019-07-24  9:31                         ` Dmitry Osipenko
2019-07-21 19:40 ` [PATCH V6 17/21] arm64: tegra: Enable wake from deep sleep on RTC alarm Sowjanya Komatineni
2019-07-26  6:30   ` Dmitry Osipenko
2019-07-21 19:40 ` Sowjanya Komatineni [this message]
2019-07-21 19:40 ` [PATCH V6 19/21] soc/tegra: pmc: Configure deep sleep control settings Sowjanya Komatineni
2019-07-21 19:40 ` [PATCH V6 20/21] arm64: dts: tegra210-p2180: Jetson TX1 SC7 timings Sowjanya Komatineni
2019-07-21 19:41 ` [PATCH V6 21/21] arm64: dts: tegra210-p3450: Jetson nano " Sowjanya Komatineni
2019-07-21 22:25   ` Dmitry Osipenko

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