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Groups > linux.kernel > #1431119
| From | Mark Brown <broonie@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFT PATCH] regmap-i2c: Only use I2C_FUNC_I2C if val_bits == 8 |
| Date | 2016-06-25 13:40 +0200 |
| Message-ID | <rNU6l-4TK-5@gated-at.bofh.it> (permalink) |
| References | <rNLZ8-8gc-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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On Fri, Jun 24, 2016 at 07:53:53PM -0700, Guenter Roeck wrote: > On chips with a register value size of 16 bits, I2C block reads will > typically not return the expected values. Instead, returned values > are most likely undefined if an operation crosses a register boundary. No, this just isn't true in general - if a device has trouble with bulk reads it needs to set use_sigle_rw in the config to disable them. Device limitations with bulk reads are a per device thing and are orthogonal to the value size, being more to do with the age and quality of the register map implementation than anything else.
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[RFT PATCH] regmap-i2c: Only use I2C_FUNC_I2C if val_bits == 8 Guenter Roeck <linux@roeck-us.net> - 2016-06-25 05:00 +0200
Re: [RFT PATCH] regmap-i2c: Only use I2C_FUNC_I2C if val_bits == 8 Mark Brown <broonie@kernel.org> - 2016-06-25 13:40 +0200
Re: [RFT PATCH] regmap-i2c: Only use I2C_FUNC_I2C if val_bits == 8 Guenter Roeck <linux@roeck-us.net> - 2016-06-25 17:10 +0200
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