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3 Commits

Author SHA1 Message Date
Gustavo A. R. Silva
48bbf63751 PM / devfreq: imx-bus: Fix inconsistent IS_ERR and PTR_ERR 
Fix inconsistent IS_ERR and PTR_ERR in imx_bus_init_icc().

The proper pointer to be passed as argument to PTR_ERR() is
priv->icc_pdev.

This bug was detected with the help of Coccinelle.

Fixes: 16c1d2f1b0bd ("PM / devfreq: imx: Register interconnect device")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
[cw00.choi: Edit the patch title from 'imx' to 'imx-bus']
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
 2020-05-28 18:02:40 +09:00
Leonard Crestez
02355216b4 PM / devfreq: imx: Register interconnect device 
There is no single device which can represent the imx interconnect.
Instead of adding a virtual one just make the main &noc act as the
global interconnect provider.

The imx interconnect provider driver will scale the NOC and DDRC based
on bandwidth request. More scalable nodes can be added in the future,
for example for audio/display/vpu/gpu NICs.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
 2020-05-28 18:02:39 +09:00
Leonard Crestez
5173a9756c PM / devfreq: Add generic imx bus scaling driver 
Add initial support for dynamic frequency switching on pieces of the imx
interconnect fabric.

All this driver does is set a clk rate based on an opp table, it does
not map register areas.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
 2020-05-28 18:02:39 +09:00