[PATCH] ARM: at91: sama5d3: reduce TWI internal clock frequency
boris brezillon
b.brezillon at overkiz.com
Fri Nov 22 10:01:17 EST 2013
Hi Ludovic,
On 22/11/2013 15:07, ludovic.desroches at atmel.com wrote:
> From: Ludovic Desroches <ludovic.desroches at atmel.com>
>
> There are still I2C unexpected behaviors which are solved by reducing TWI
> internal frequency.
I guess I should do the same for the dt version of sama5 clks.
Nicolas, what do you think ?
Best Regards,
Boris
>
> Cc: <stable at vger.kernel.org> #3.10+
> Signed-off-by: Ludovic Desroches <ludovic.desroches at atmel.com>
> ---
> arch/arm/mach-at91/sama5d3.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-at91/sama5d3.c b/arch/arm/mach-at91/sama5d3.c
> index 4012797..4ee0de5 100644
> --- a/arch/arm/mach-at91/sama5d3.c
> +++ b/arch/arm/mach-at91/sama5d3.c
> @@ -95,19 +95,19 @@ static struct clk twi0_clk = {
> .name = "twi0_clk",
> .pid = SAMA5D3_ID_TWI0,
> .type = CLK_TYPE_PERIPHERAL,
> - .div = AT91_PMC_PCR_DIV2,
> + .div = AT91_PMC_PCR_DIV8,
> };
> static struct clk twi1_clk = {
> .name = "twi1_clk",
> .pid = SAMA5D3_ID_TWI1,
> .type = CLK_TYPE_PERIPHERAL,
> - .div = AT91_PMC_PCR_DIV2,
> + .div = AT91_PMC_PCR_DIV8,
> };
> static struct clk twi2_clk = {
> .name = "twi2_clk",
> .pid = SAMA5D3_ID_TWI2,
> .type = CLK_TYPE_PERIPHERAL,
> - .div = AT91_PMC_PCR_DIV2,
> + .div = AT91_PMC_PCR_DIV8,
> };
> static struct clk mmc0_clk = {
> .name = "mci0_clk",
>
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