lkml.org 
[lkml]   [2014]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/3] i2c: add DMA support for freescale i2c driver
On Thu, Feb 27, 2014 at 09:39:35PM +0100, Marek Vasut wrote:
> > @@ -193,6 +216,7 @@ static const struct imx_i2c_hwdata imx1_i2c_hwdata = {
> > .ndivs = ARRAY_SIZE(imx_i2c_clk_div),
> > .i2sr_clr_opcode = I2SR_CLR_OPCODE_W0C,
> > .i2cr_ien_opcode = I2CR_IEN_OPCODE_1,
> > + .has_dma_support = false,
> >
> > };
> >
> > @@ -203,6 +227,7 @@ static const struct imx_i2c_hwdata imx21_i2c_hwdata =
> > { .ndivs = ARRAY_SIZE(imx_i2c_clk_div),
> > .i2sr_clr_opcode = I2SR_CLR_OPCODE_W0C,
> > .i2cr_ien_opcode = I2CR_IEN_OPCODE_1,
> > + .has_dma_support = false,
> >
> > };
> >
> > @@ -213,6 +238,7 @@ static struct imx_i2c_hwdata vf610_i2c_hwdata = {
> > .ndivs = ARRAY_SIZE(vf610_i2c_clk_div),
> > .i2sr_clr_opcode = I2SR_CLR_OPCODE_W1C,
> > .i2cr_ien_opcode = I2CR_IEN_OPCODE_0,
> > + .has_dma_support = true,
>
> So why exactly don't we have a DT prop for determining whether the controller
> has DMA support ?

Using DMA or PIO is a decision that should be made by driver on its own,
not device tree.

Shawn



\
 
 \ /
  Last update: 2014-02-28 04:01    [W:0.142 / U:5.808 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site