Re: [U-Boot] [PATCH 1/2 V5] spi: Add support for preamble bytes

2013-06-02 Thread Jagan Teki
On Wed, May 29, 2013 at 11:40 AM, Rajeshwari Shinde rajeshwar...@samsung.com wrote: A SPI slave may take time to react to a request. For SPI flash devices this time is defined as one bit time, or a whole byte for 'fast read' mode. If the SPI slave is another CPU, then the time it takes to

Re: [U-Boot] [PATCH 1/2 V5] spi: Add support for preamble bytes

2013-06-02 Thread Simon Glass
Hi, On Sun, Jun 2, 2013 at 10:24 AM, Jagan Teki jagannadh.t...@gmail.comwrote: On Wed, May 29, 2013 at 11:40 AM, Rajeshwari Shinde rajeshwar...@samsung.com wrote: A SPI slave may take time to react to a request. For SPI flash devices this time is defined as one bit time, or a whole byte

Re: [U-Boot] [PATCH 1/2 V5] spi: Add support for preamble bytes

2013-06-02 Thread Jagan Teki
On Sun, Jun 2, 2013 at 11:25 PM, Simon Glass s...@chromium.org wrote: Hi, On Sun, Jun 2, 2013 at 10:24 AM, Jagan Teki jagannadh.t...@gmail.com wrote: On Wed, May 29, 2013 at 11:40 AM, Rajeshwari Shinde rajeshwar...@samsung.com wrote: A SPI slave may take time to react to a request. For

Re: [U-Boot] [PATCH 1/2 V5] spi: Add support for preamble bytes

2013-06-02 Thread Simon Glass
Hi Jagan, On Sun, Jun 2, 2013 at 11:00 AM, Jagan Teki jagannadh.t...@gmail.comwrote: On Sun, Jun 2, 2013 at 11:25 PM, Simon Glass s...@chromium.org wrote: Hi, On Sun, Jun 2, 2013 at 10:24 AM, Jagan Teki jagannadh.t...@gmail.com wrote: On Wed, May 29, 2013 at 11:40 AM, Rajeshwari

[U-Boot] [PATCH 1/2 V5] spi: Add support for preamble bytes

2013-05-29 Thread Rajeshwari Shinde
A SPI slave may take time to react to a request. For SPI flash devices this time is defined as one bit time, or a whole byte for 'fast read' mode. If the SPI slave is another CPU, then the time it takes to react may vary. It is convenient to allow the slave device to tag the start of the actual