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path: root/drivers/devfreq/mtk-cci-devfreq.c
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2023-05-29PM / devfreq: mtk-cci: Fix variable deferencing before NULL checkSukrut Bellary
smatch warning: drivers/devfreq/mtk-cci-devfreq.c:135 mtk_ccifreq_target() warn: variable dereferenced before check 'drv' (see line 130) This is based on static analysis only. Compilation tested. Signed-off-by: Sukrut Bellary <sukrut.bellary@linux.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2022-09-26PM / devfreq: mtk-cci: Handle sram regulator probe deferralAngeloGioacchino Del Regno
If the regulator_get_optional() call for the SRAM regulator returns a probe deferral, we must bail out and retry probing later: failing to do this will produce unstabilities on platforms requiring the handling for this regulator. Fixes: b615b00c42da ("PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
2022-07-15PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driverJohnson Wang
We introduce a devfreq driver for the MediaTek Cache Coherent Interconnect (CCI) used by some MediaTek SoCs. In this driver, we use the passive devfreq driver to get target frequencies and adjust voltages accordingly. In MT8183 and MT8186, the MediaTek CCI is supplied by the same regulators with the little core CPUs. Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com> Signed-off-by: Johnson Wang <johnson.wang@mediatek.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>