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From: Johan Jonker <jbx6244@gmail.com>
To: u-boot@0leil.net
Cc: kever.yang@rock-chips.com, sjg@chromium.org, trini@konsulko.com,
	u-boot@lists.u-boot-project.org, eddie.cai.linux@gmail.com
Subject: [PATCH v6 6/6] rockchip: doc: add notes section
Date: Thu, 13 Aug 2026 23:00:13 +0200	[thread overview]
Message-ID: <bcd1ab49-dee7-4f99-962f-1d4876e7758e@gmail.com> (raw)
In-Reply-To: <53b3903e-9413-4c96-ab45-4c34a2a6dca9@gmail.com>

Add a notes section for things that don't need
a chapter. Include some rk3036/rk3066 cases.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
---
 doc/board/rockchip/rockchip.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index 7f6570f95cf4..3fbc307a0c45 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -332,6 +332,14 @@ To build rk3588 boards:
         make evb-rk3588_defconfig
         make CROSS_COMPILE=aarch64-linux-gnu-
 
+Notes
+^^^^^
+
+* rk3036: SDMMC and the debug uart share the same iomux, so if
+  a SD card is the boot medium, the debug uart must be disabled.
+* rk3066: eMMC and NAND share the same iomux, so if in Mask ROM mode
+  and a NAND is the boot medium, clear the emmc_flash_sel bit in GRF_SOC_CON0.
+
 Mask ROM mode
 -------------
 
-- 
2.39.5


  parent reply	other threads:[~2026-08-13 21:00 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-13 20:54 [PATCH v6 0/6] doc: clean up README.rockchip Johan Jonker
2026-08-13 20:56 ` [PATCH v6 1/6] rockchip: scripts: remove rkmux.py Johan Jonker
2026-08-13 20:57 ` [PATCH v6 2/6] rockchip: doc: add mask ROM mode text Johan Jonker
2026-08-13 20:57 ` [PATCH v6 3/6] rockchip: doc: remove TODO Johan Jonker
2026-08-13 20:58 ` [PATCH v6 4/6] rockchip: doc: remove README.rockchip Johan Jonker
2026-08-13 20:59 ` [PATCH v6 5/6] rockchip: doc: add back to ROM section Johan Jonker
2026-08-14  7:47   ` Jonas Karlman
2026-08-14 21:16   ` Simon Glass
2026-08-13 21:00 ` Johan Jonker [this message]
2026-08-14 18:52   ` [PATCH v6 6/6] rockchip: doc: add notes section Simon Glass

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