From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/2] i2c: imx: Add Vybrid VF610 I2C controller support
Date: Thu, 20 Jun 2013 10:04:06 +0200 [thread overview]
Message-ID: <20130620080406.GD14308@pengutronix.de> (raw)
In-Reply-To: <1371545327-12481-1-git-send-email-b35083@freescale.com>
On Tue, Jun 18, 2013 at 04:48:47PM +0800, Jingchang Lu wrote:
> +static u16 imx_i2c_clk_div[50][2] = {
> { 22, 0x20 }, { 24, 0x21 }, { 26, 0x22 }, { 28, 0x23 },
> { 30, 0x00 }, { 32, 0x24 }, { 36, 0x25 }, { 40, 0x26 },
> { 42, 0x03 }, { 44, 0x27 }, { 48, 0x28 }, { 52, 0x05 },
> @@ -112,11 +107,67 @@ static u16 __initdata i2c_clk_div[50][2] = {
> { 3072, 0x1E }, { 3840, 0x1F }
> };
>
> +/* Vybrid VF610 clock divider, register value pairs */
> +static u16 vf610_i2c_clk_div[60][2] = {
> + { 20, 0x00 }, { 22, 0x01 }, { 24, 0x02 }, { 26, 0x03 },
> + { 28, 0x04 }, { 30, 0x05 }, { 32, 0x09 }, { 34, 0x06 },
> + { 36, 0x0A }, { 40, 0x07 }, { 44, 0x0C }, { 48, 0x0D },
> + { 52, 0x43 }, { 56, 0x0E }, { 60, 0x45 }, { 64, 0x12 },
> + { 68, 0x0F }, { 72, 0x13 }, { 80, 0x14 }, { 88, 0x15 },
> + { 96, 0x19 }, { 104, 0x16 }, { 112, 0x1A }, { 128, 0x17 },
> + { 136, 0x4F }, { 144, 0x1C }, { 160, 0x1D }, { 176, 0x55 },
> + { 192, 0x1E }, { 208, 0x56 }, { 224, 0x22 }, { 228, 0x24 },
> + { 240, 0x1F }, { 256, 0x23 }, { 288, 0x5C }, { 320, 0x25 },
> + { 384, 0x26 }, { 448, 0x2A }, { 480, 0x27 }, { 512, 0x2B },
> + { 576, 0x2C }, { 640, 0x2D }, { 768, 0x31 }, { 896, 0x32 },
> + { 960, 0x2F }, { 1024, 0x33 }, { 1152, 0x34 }, { 1280, 0x35 },
> + { 1536, 0x36 }, { 1792, 0x3A }, { 1920, 0x37 }, { 2048, 0x3B },
> + { 2304, 0x3C }, { 2560, 0x3D }, { 3072, 0x3E }, { 3584, 0x7A },
> + { 3840, 0x3F }, { 4096, 0x7B }, { 5120, 0x7D }, { 6144, 0x7E },
> +};
...
> +static struct imx_i2c_hwdata imx_i2c_hwdata = {
> + .addr_reg = 0x00,
> + .freq_reg = 0x04,
> + .ctrl_reg = 0x08,
> + .status_reg = 0x0c,
> + .data_reg = 0x10,
> + .clk_div = imx_i2c_clk_div,
> + .ndivs = ARRAY_SIZE(imx_i2c_clk_div),
> + .i2sr_clr_opcode = I2SR_CLR_OPCODE_W0C,
> + .i2cr_ien_opcode = I2CR_IEN_OPCODE_1,
> +
> +};
> +
> +static struct imx_i2c_hwdata vf610_i2c_hwdata = {
> + .addr_reg = 0x00,
> + .freq_reg = 0x01,
> + .ctrl_reg = 0x02,
> + .status_reg = 0x03,
> + .data_reg = 0x04,
> + .clk_div = vf610_i2c_clk_div,
> + .ndivs = ARRAY_SIZE(vf610_i2c_clk_div),
> + .i2sr_clr_opcode = I2SR_CLR_OPCODE_W1C,
> + .i2cr_ien_opcode = I2CR_IEN_OPCODE_0,
> +
> +};
Wow. The i2c unit remained unchanged since the i.MX21 days. Shuffling
some registers or divider values was long overdue...
Sascha
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next prev parent reply other threads:[~2013-06-20 8:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-18 8:48 [PATCH v2 2/2] i2c: imx: Add Vybrid VF610 I2C controller support Jingchang Lu
2013-06-19 8:51 ` Shawn Guo
2013-06-20 8:04 ` Sascha Hauer [this message]
2013-06-28 8:49 ` Lu Jingchang-B35083
2013-08-01 20:33 ` Sascha Hauer
2013-08-02 5:19 ` Lu Jingchang-B35083
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