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drm: panel: jd9365da: set refresh rate to 59.94Hz for radxa_display_8hd_ad002#531

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chenchongbiao:20260325-fix-8hd-blank-screen
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drm: panel: jd9365da: set refresh rate to 59.94Hz for radxa_display_8hd_ad002#531
chenchongbiao wants to merge 1 commit intoradxa:linux-6.18.2from
chenchongbiao:20260325-fix-8hd-blank-screen

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The radxa_display_8hd_ad002 panel fails to display when configured at
60.000Hz, resulting in a blank screen on both Radxa Dragon Q6A and
Radxa Zero 2 Pro platforms. Empirical testing confirms that 59.94Hz
works reliably on both devices.

Update pixel clock to 71804 kHz, calculated as:
(800 + 40 + 18 + 40) * (1280 + 20 + 4 + 30) * 59.94 / 1000 ≈ 71804 kHz

This matches the actual hardware capability and resolves blank screen on boot.

Issue: radxa-docs/docs/issues/1355

…hd_ad002

The radxa_display_8hd_ad002 panel fails to display when configured at
60.000Hz, resulting in a blank screen on both Radxa Dragon Q6A and
Radxa Zero 2 Pro platforms. Empirical testing confirms that 59.94Hz
works reliably on both devices.

Update pixel clock to 71804 kHz, calculated as:
  (800 + 40 + 18 + 40) * (1280 + 20 + 4 + 30) * 59.94 / 1000 ≈ 71804 kHz

This matches the actual hardware capability and resolves blank screen
on boot.

Signed-off-by: Chongbiao Chen <chenchongbiao@radxa.com>
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