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From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/6] omap: RX-51: Drop I2C-1 speed to 2200
Date: Tue, 13 Oct 2009 17:14:30 -0700	[thread overview]
Message-ID: <20091014001430.6116.52257.stgit@localhost> (raw)
In-Reply-To: <20091014001233.6116.84749.stgit@localhost>

From: Aaro Koskinen <Aaro.Koskinen@nokia.com>

The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited
by TWL5030/GAIA; a higher speed could lead to errors on the interface. The
maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz),
2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz).

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap2/board-rx51-peripherals.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index c1af532..2b0eb1b 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -444,7 +444,7 @@ static int __init rx51_i2c_init(void)
 		rx51_twldata.vaux3 = &rx51_vaux3_cam;
 		rx51_twldata.vmmc2 = &rx51_vmmc2;
 	}
-	omap_register_i2c_bus(1, 2600, rx51_peripherals_i2c_board_info_1,
+	omap_register_i2c_bus(1, 2200, rx51_peripherals_i2c_board_info_1,
 			ARRAY_SIZE(rx51_peripherals_i2c_board_info_1));
 	omap_register_i2c_bus(2, 100, NULL, 0);
 	omap_register_i2c_bus(3, 400, NULL, 0);

  parent reply	other threads:[~2009-10-14  0:14 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-14  0:13 [PATCH 0/6] omap fixes for v2.6.32-rc4 Tony Lindgren
2009-10-14  0:13 ` [PATCH 1/6] omap: Fix Unlikely(x) < y Tony Lindgren
2009-10-14 16:55   ` Tony Lindgren
2009-10-14  0:13 ` [PATCH 2/6] omap: CONFIG_ISP1301_OMAP redefined in Beagle defconfig Tony Lindgren
2009-10-14  0:14 ` [PATCH 3/6] omap: SDMA: Fixing bug in omap_dma_set_global_params() Tony Lindgren
2009-10-14  0:14 ` Tony Lindgren [this message]
2009-10-14  0:14 ` [PATCH 5/6] omap: Initialization of SDRC params on Zoom2 Tony Lindgren
2009-10-14  0:14 ` [PATCH 6/6] omap: McBSP: Fix incorrect receiver stop in omap_mcbsp_stop Tony Lindgren

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