Re: [PATCH 1/4] drm: rcar-mipi-dsi: Fix CLOCKSET1_LOCK definition

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On 19/06/2024 22:29, Laurent Pinchart wrote:
Hi Jacopo,

Thank you for the patch.

CC'ing Tomi.

On Wed, Jun 19, 2024 at 12:22:15PM +0200, Jacopo Mondi wrote:
From: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>

Version 0.51 of the Renesas R-Car Gen4 TRM reports bit 16 of the
CLOCKSET1 register of the DSI transmitter module to be a reserved
field.

Fix this by correcting the CLOCKSET1_LOCK definition to match the TRM
and remove the CLOCKSET1_LOCK_PHY definition, as the register is simply
called "lock" in the datasheet.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h b/drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h
index f8114d11f2d1..1bf9c4717d5a 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi_regs.h
@@ -141,8 +141,7 @@
  #define PHYSETUP_RSTZ			(1 << 0)
#define CLOCKSET1 0x101c
-#define CLOCKSET1_LOCK_PHY		(1 << 17)
-#define CLOCKSET1_LOCK			(1 << 16)
+#define CLOCKSET1_LOCK			(1 << 17)

This matches the documentation, but we should get it tested on V4H to
make sure it doesn't cause a regression. Tomi, would you be able to test
the patch ?

Works for me.

Tested-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>

 Tomi





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