linux-kernel - [PATCH] clk: tegra: Use XUSB-compatible SATA PLL sequence

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 8 Jul 2014 10:30:15 +0300
From:	Mikko Perttunen <mperttunen@...dia.com>
To:	<abrestic@...omium.org>, <pdeschrijver@...dia.com>,
	<swarren@...dotorg.org>, <thierry.reding@...il.com>
CC:	<tj@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
	<linux-ide@...r.kernel.org>,
	Mikko Perttunen <mperttunen@...dia.com>
Subject: [PATCH] clk: tegra: Use XUSB-compatible SATA PLL sequence

Use a sequence for enabling hardware control of the SATA PLL
that works both when using the SATA lane with SATA and when
using it with XUSB.

Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
---
Andrew: yes, it does :)
Peter: Feel free to squash if that works for you.

 drivers/clk/tegra/clk-pll.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index f070c36..c7c6d8f 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -112,6 +112,9 @@
 
 #define SATA_PLL_CFG0		0x490
 #define SATA_PLL_CFG0_PADPLL_RESET_SWCTL	BIT(0)
+#define SATA_PLL_CFG0_PADPLL_USE_LOCKDET	BIT(2)
+#define SATA_PLL_CFG0_SEQ_ENABLE		BIT(24)
+#define SATA_PLL_CFG0_SEQ_START_STATE		BIT(25)
 
 #define PLLE_MISC_PLLE_PTS	BIT(8)
 #define PLLE_MISC_IDDQ_SW_VALUE	BIT(13)
@@ -1367,6 +1370,14 @@ static int clk_plle_tegra114_enable(struct clk_hw *hw)
 	/* Enable hw control of SATA pll */
 	val = pll_readl(SATA_PLL_CFG0, pll);
 	val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL;
+	val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET;
+	val |= SATA_PLL_CFG0_SEQ_START_STATE;
+	pll_writel(val, SATA_PLL_CFG0, pll);
+
+	udelay(1);
+
+	val = pll_readl(SATA_PLL_CFG0, pll);
+	val |= SATA_PLL_CFG0_SEQ_ENABLE;
 	pll_writel(val, SATA_PLL_CFG0, pll);
 
 out:
-- 
1.8.1.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/