This reverts commit f6f7ad3234613f6f7f27c25036aaf078de07e9b0.
("drm/atmel-hlcdc: allow selecting a higher pixel-clock than requested")
because allowing selecting a higher pixel clock may overclock
LCD devices, not all of them being capable of this.
Cc: Peter Rosin <p...@axentia.se>
Signed-off-by: Claudiu Beznea <claudiu.bez...@microchip.com>
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index 721fa88bf71d..1a70dff1a417 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -117,18 +117,6 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc
*c)
div = DIV_ROUND_UP(prate, mode_rate);
if (ATMEL_HLCDC_CLKDIV(div) & ~ATMEL_HLCDC_CLKDIV_MASK)
div = ATMEL_HLCDC_CLKDIV_MASK;
- } else {
- int div_low = prate / mode_rate;
-
- if (div_low >= 2 &&
- ((prate / div_low - mode_rate) <
- 10 * (mode_rate - prate / div)))
- /*
- * At least 10 times better when using a higher
- * frequency than requested, instead of a lower.
- * So, go with that.
- */
- div = div_low;
}
cfg |= ATMEL_HLCDC_CLKDIV(div);
--
2.7.4
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