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authorGeert Uytterhoeven <geert+renesas@glider.be>2015-08-04 15:28:15 +0300
committerSimon Horman <horms+renesas@verge.net.au>2015-09-14 04:20:23 +0300
commitcbc41d0a761bffb3166a413a3c77100a737c0cd7 (patch)
tree689fdab73ad148e46bfd24fc914fbbc1029821b1 /block
parent9b302c1acf4114d51b7f0962df0b0ddee0dc75cd (diff)
downloadlinux-cbc41d0a761bffb3166a413a3c77100a737c0cd7.tar.xz
drivers: sh: Disable PM runtime for multi-platform ARM with genpd
If the default PM Domain using PM_CLK is used for PM runtime, the real Clock Domain cannot be registered from DT later. Hence do not enable it when running a multi-platform kernel with genpd support on R-Car or RZ. The CPG/MSTP Clock Domain driver will take care of PM runtime management of the module clocks. Now most multi-platform ARM shmobile platforms (SH-Mobile, R-Mobile, R-Car, RZ) use DT-based PM Domains to take care of PM runtime management of the module clocks, simplify the platform logic by replacing the explicit SoC checks by a single check for the presence of MSTP clocks in DT. Backwards-compatiblity with old DTs (mainly for R-Car Gen2) is provided by checking for the presence of a "#power-domain-cells" property in DT. The default PM Domain is still needed for: - backwards-compatibility with old DTs that lack PM Domain properties, - the CONFIG_PM=n case, - legacy (non-DT) ARM/shmobile platforms without genpd support (r8a7778, r8a7779), - legacy SuperH. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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