From: Renaud Barbier <renaud.barbier@ge.com>
To: barebox@lists.infradead.org
Subject: Re: [PATCH 4/5] ppc: DA923RC: add board support
Date: Thu, 31 Oct 2013 20:10:28 +0000 [thread overview]
Message-ID: <5272B934.7080508@ge.com> (raw)
In-Reply-To: <20131031074833.GI24559@pengutronix.de>
On 31/10/2013 07:48, Sascha Hauer wrote:
>>> +
>>> > > + fsl_i2c_init(0, 400000, 0x7f);
>>> > > + /* Read board id from offset 0. */
>>> > > + ret = fsl_i2c_read(i2c, 0x3b, 0, 1, &id, sizeof(uint8_t));
>>> > > + fsl_i2c_stop(i2c);
>>> > > +
>>> > > + if (ret == -1) {
>>> > > + /* Enable I2C bus on GBX460. */
>>> > > + out_be16(IOMEM(0xfc010020), 0);
>>> > > + ret = fsl_i2c_read(i2c, 0x3b, 0, 1, &id, sizeof(uint8_t));
>>> > > + fsl_i2c_stop(i2c);
>> > why you do not simly use the standdard i2c AP?
> I think because the machine is still running from SRAM or flash here and
> I2C is needed to read out the SPD EEPROM for setting up SDRAM.
>
In order to use the I2C API would I not need to register my i2c bus
first? This only happens later in the initcall list with device-initcall.
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next prev parent reply other threads:[~2013-10-31 20:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-30 10:22 [PATCH v2 0/5] GEIP DA923RC board support Renaud Barbier
2013-10-30 10:22 ` [PATCH 1/5] ppc: mpc85xx: mpc8544 support Renaud Barbier
2013-10-30 10:22 ` [PATCH 2/5] ppc: mpc85xx: define Ethernet port count Renaud Barbier
2013-10-30 10:22 ` [PATCH 3/5] ppc: mpc85xx: enable DDR driver Renaud Barbier
2013-10-30 10:22 ` [PATCH 4/5] ppc: DA923RC: add board support Renaud Barbier
2013-10-30 11:34 ` Jean-Christophe PLAGNIOL-VILLARD
2013-10-31 7:48 ` Sascha Hauer
2013-10-31 13:15 ` Renaud Barbier
2013-10-31 20:10 ` Renaud Barbier [this message]
2013-11-01 11:58 ` Sascha Hauer
2013-11-01 12:56 ` Renaud Barbier
2013-11-01 13:02 ` Renaud Barbier
2013-11-01 15:03 ` Renaud Barbier
2013-11-01 20:28 ` Sascha Hauer
2013-11-04 18:06 ` Renaud Barbier
2013-11-05 7:35 ` Sascha Hauer
2013-10-31 14:41 ` Renaud Barbier
2013-10-31 16:01 ` Jean-Christophe PLAGNIOL-VILLARD
2013-10-31 18:59 ` Renaud Barbier
2013-10-30 10:22 ` [PATCH 5/5] ppc: mpc85xx: build directives Renaud Barbier
-- strict thread matches above, loose matches on Subject: below --
2013-11-05 15:36 [PATCH v3 0/5] GEIP DA923RC board support Renaud Barbier
2013-11-05 15:36 ` [PATCH 4/5] ppc: DA923RC: add " Renaud Barbier
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