[linux-sunxi] Re: [PATCH v2 1/5] ARM: dts: sun8i: Add SID node
From: Maxime Ripard <hidden>
Date: 2015-12-01 08:41:22
Also in:
linux-clk, linux-devicetree, linux-pm, lkml
Hi, On Wed, Nov 25, 2015 at 09:22:56AM +0800, Shuge wrote:
On Monday, November 23, 2015 at 17:32 UTC+8, Maxime Ripard wrote:quoted
On Mon, Nov 23, 2015 at 10:51:15PM -0800, Sugar Wu wrote:quoted
On Monday, November 23, 2015 at 8:43:59 PM UTC+8, Maxime Ripard wrote:quoted
Hi, On Mon, Nov 23, 2015 at 09:02:48AM +0100, Josef Gajdusek wrote:quoted
Add a node describing the Security ID memory to the Allwinner H3 .dtsi file. Signed-off-by: Josef Gajdusek <a...@atx.name <javascript:>> --- arch/arm/boot/dts/sun8i-h3.dtsi | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/arch/arm/boot/dts/sun8i-h3.dtsib/arch/arm/boot/dts/sun8i-h3.dtsiquoted
index 0faa38a..58de718 100644--- a/arch/arm/boot/dts/sun8i-h3.dtsi +++ b/arch/arm/boot/dts/sun8i-h3.dtsi@@ -359,6 +359,13 @@ #size-cells = <0>; }; + sid: eeprom at 01c14000 { + compatible = "allwinner,sun4i-a10-sid"; + reg = <0x01c14000 0x400>;The datasheet says it's 256 bytes wide, while the size here is of 1kB, is it intentional?SID memory map is 0x01c14000 ~ 0x01c143FF, include 2048bits efuse space. H3 efuse space is SID_SRAM, its range is 0x01c14200 ~ +0x100.Interesting, what is below the 0x200 registers?Some control register about SID. offset: 0x40 SID Program/Read Control Register offset: 0x50 SID Program Key Value Register offset: 0x60 SID Read Key Value Register offset: 0x70 \ offset: 0x80 SJTAG Attribute 0 Register offset: 0x84 SJTAG Attribute 1 Register offset: 0x88 SJTAG Select Register offset: 0x90 SID Program Ctrol register for burned timing
Thanks! I guess the layout changed a bit from the A10 and alikes then. Anyway, we should expose only to the nvmem framework the actual eeprom space, so from 0x200 to 0x300 from what you're saying (just like we should only expose the first 4 bytes in the A10 / A20) Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20151201/13082dcd/attachment.sig>