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authorClaudiu Beznea <claudiu.beznea@microchip.com>2019-12-18 14:28:25 +0200
committerSam Ravnborg <sam@ravnborg.org>2020-01-06 19:53:24 +0100
commit2c1fb9d86f6820abbfaa38a6836157c76ccb4e7b (patch)
treee2fad7a955a15abfe1a7abc2d5a90eb2abfc30a2 /mm/slab.c
parent07acf4bafe81dd37eff3fbcfbbdbc48084bc202b (diff)
drm: atmel-hlcdc: enable clock before configuring timing engine
Changing pixel clock source without having this clock source enabled will block the timing engine and the next operations after (in this case setting ATMEL_HLCDC_CFG(5) settings in atmel_hlcdc_crtc_mode_set_nofb() will fail). It is recomended (although in datasheet this is not present) to actually enabled pixel clock source before doing any changes on timing enginge (only SAM9X60 datasheet specifies that the peripheral clock and pixel clock must be enabled before using LCD controller). Fixes: 1a396789f65a ("drm: add Atmel HLCDC Display Controller support") Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: <stable@vger.kernel.org> # v4.0+ Link: https://patchwork.freedesktop.org/patch/msgid/1576672109-22707-3-git-send-email-claudiu.beznea@microchip.com
Diffstat (limited to 'mm/slab.c')
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