From mboxrd@z Thu Jan 1 00:00:00 1970 From: andrew@lunn.ch (Andrew Lunn) Date: Fri, 20 Jul 2012 19:35:39 +0200 Subject: [PATCH 4/16] ARM: Orion: Add arch support needed for I2C via DT. In-Reply-To: <1342805751-18048-1-git-send-email-andrew@lunn.ch> References: <1342805751-18048-1-git-send-email-andrew@lunn.ch> Message-ID: <1342805751-18048-5-git-send-email-andrew@lunn.ch> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The MV64XXX I2C driver needs a clock in order to calculate the baud rate factors. So add an clk to the clk tree. Also add the base DT properties for kirkwood devices. Signed-off-by: Andrew Lunn --- arch/arm/boot/dts/kirkwood.dtsi | 10 ++++++++++ arch/arm/mach-kirkwood/board-dt.c | 2 ++ arch/arm/mach-kirkwood/common.c | 2 ++ arch/arm/plat-orion/common.c | 1 + 4 files changed, 15 insertions(+) diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index a3350fd..e13d746 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -82,5 +82,15 @@ /* set partition map and/or chip-delay in board dts */ status = "disabled"; }; + + i2c at 11000 { + compatible = "marvell,mv64xxx-i2c"; + reg = <0x11000 0x20>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <29>; + clock-frequency = <100000>; + status = "disabled"; + }; }; }; diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 8f8da5d..24c8fdd 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -28,6 +28,8 @@ static struct of_device_id kirkwood_dt_match_table[] __initdata = { struct of_dev_auxdata kirkwood_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("marvell,orion-spi", 0xf1010600, "orion_spi.0", NULL), + OF_DEV_AUXDATA("marvell,mv64xxx-i2c", 0xf1011000, "mv64xxx_i2c.0", + NULL), {}, }; diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index 3de2d6d..df8079e 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -241,6 +242,7 @@ void __init kirkwood_clk_init(void) orion_clkdev_add("0", "pcie", pex0); orion_clkdev_add("1", "pcie", pex1); orion_clkdev_add(NULL, "kirkwood-i2s", audio); + orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".0", runit); /* Marvell says runit is used by SPI, UART, NAND, TWSI, ..., * so should never be gated. diff --git a/arch/arm/plat-orion/common.c b/arch/arm/plat-orion/common.c index c179378..d245a87 100644 --- a/arch/arm/plat-orion/common.c +++ b/arch/arm/plat-orion/common.c @@ -47,6 +47,7 @@ void __init orion_clkdev_init(struct clk *tclk) orion_clkdev_add(NULL, MV643XX_ETH_NAME ".2", tclk); orion_clkdev_add(NULL, MV643XX_ETH_NAME ".3", tclk); orion_clkdev_add(NULL, "orion_wdt", tclk); + orion_clkdev_add(NULL, MV64XXX_I2C_CTLR_NAME ".0", tclk); } /* Fill in the resources structure and link it into the platform -- 1.7.10