From: Ilya Ledvich <ilya@compulab.co.il>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] am33xx: fix the ddr_cmdtctrl structure
Date: Mon, 17 Jun 2013 16:59:27 +0300 [thread overview]
Message-ID: <1371477567-8418-1-git-send-email-ilya@compulab.co.il> (raw)
Fix the wrong mapping between the DDR I/O control registers on AM33XX
SoCs and the software representation in the SPL code.
The most recent public TRM defines the following DDR I/O control registers
offsets:
* ddr_cmd0_ioctrl : offset 0x44E11404
* ddr_cmd1_ioctrl : offset 0x44E11408
* ddr_cmd2_ioctrl : offset 0x44E1140C
* ddr_data0_ioctrl: offset 0x44E11440
* ddr_data1_ioctrl: offset 0x44E11444
While the struct ddr_cmdtctrl has also some reserved bits in the beginning.
The struct is mapped to the address 0x44E11404. As a result "cm0ioctl" points
to the ddr_cmd1_ioctrl register, "cm1ioctl" to the ddr_cmd2_ioctrl and etc.
Registers ddr_cmd0_ioctrl and ddr_data0_ioctrl are never configured because
of this mapping mismatch.
Signed-off-by: Ilya Ledvich <ilya@compulab.co.il>
---
arch/arm/include/asm/arch-am33xx/ddr_defs.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index fb4e78e..a529460 100644
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -267,7 +267,6 @@ void config_ddr_data(const struct ddr_data *data, int nr);
* This structure represents the DDR io control on AM33XX devices.
*/
struct ddr_cmdtctrl {
- unsigned int resv1[1];
unsigned int cm0ioctl;
unsigned int cm1ioctl;
unsigned int cm2ioctl;
--
1.7.9.5
next reply other threads:[~2013-06-17 13:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 13:59 Ilya Ledvich [this message]
2013-06-17 20:13 ` [U-Boot] [PATCH] am33xx: fix the ddr_cmdtctrl structure Peter Korsgaard
2013-07-02 20:06 ` [U-Boot] " Tom Rini
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