Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Shawn Lin
On 2017/1/9 13:41, Jaehoon Chung wrote: On 01/09/2017 12:39 PM, Ziyuan wrote: On 01/05/2017 03:34 PM, Shawn Lin wrote: On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Shawn Lin
On 2017/1/9 13:41, Jaehoon Chung wrote: On 01/09/2017 12:39 PM, Ziyuan wrote: On 01/05/2017 03:34 PM, Shawn Lin wrote: On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Jaehoon Chung
On 01/09/2017 12:39 PM, Ziyuan wrote: > > > On 01/05/2017 03:34 PM, Shawn Lin wrote: >> On 2017/1/5 15:23, Ziyuan Xu wrote: >>> It's necessary to setup bus if any slots are present. >>> - update clock after ctrl reset >>> - if the host has genpd node, we can guarantee the clock is available >>>

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Jaehoon Chung
On 01/09/2017 12:39 PM, Ziyuan wrote: > > > On 01/05/2017 03:34 PM, Shawn Lin wrote: >> On 2017/1/5 15:23, Ziyuan Xu wrote: >>> It's necessary to setup bus if any slots are present. >>> - update clock after ctrl reset >>> - if the host has genpd node, we can guarantee the clock is available >>>

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Ziyuan
On 01/05/2017 03:34 PM, Shawn Lin wrote: On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-08 Thread Ziyuan
On 01/05/2017 03:34 PM, Shawn Lin wrote: On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-04 Thread Shawn Lin
On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is reset once power off the pd, and host can't

Re: [PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-04 Thread Shawn Lin
On 2017/1/5 15:23, Ziyuan Xu wrote: It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is reset once power off the pd, and host can't

[PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-04 Thread Ziyuan Xu
It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is reset once power off the pd, and host can't output the active clock during

[PATCH v4] mmc: dw_mmc: force setup bus if active slots exist

2017-01-04 Thread Ziyuan Xu
It's necessary to setup bus if any slots are present. - update clock after ctrl reset - if the host has genpd node, we can guarantee the clock is available before starting request. Otherwies, the clock register is reset once power off the pd, and host can't output the active clock during