Re: [PATCH 1/4] i2c: tegra: make sure register writes completes

2012-06-12 Thread Stephen Warren
On 06/12/2012 04:16 AM, Laxman Dewangan wrote: > On Tuesday 12 June 2012 01:24 PM, Wolfram Sang wrote: >> * PGP Signed by an unknown key >> >> On Tue, Jun 05, 2012 at 06:39:57PM +0530, Laxman Dewangan wrote: >>> @@ -430,6 +430,13 @@ static irqreturn_t tegra_i2c_isr(int irq, void >>> *dev_id) >>>

Re: [PATCH 1/4] i2c: tegra: make sure register writes completes

2012-06-12 Thread Laxman Dewangan
On Tuesday 12 June 2012 01:24 PM, Wolfram Sang wrote: * PGP Signed by an unknown key On Tue, Jun 05, 2012 at 06:39:57PM +0530, Laxman Dewangan wrote: @@ -430,6 +430,13 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id) if (i2c_dev->is_dvc) dvc_writel(i2c_dev, DVC

Re: [PATCH 1/4] i2c: tegra: make sure register writes completes

2012-06-12 Thread Wolfram Sang
On Tue, Jun 05, 2012 at 06:39:57PM +0530, Laxman Dewangan wrote: > The Tegra PPSB (an peripheral bus) queues writes transactions. > In order to guarantee that writes have completed before a > certain time, a read transaction to a register on the same > bus must be executed. > This is necessary in s