linux-kernel - JMicron chipset update

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 12 Aug 2010 00:27:24 -0700 (PDT)
From:	Alex Dubov <oakad@...oo.com>
To:	Maxim Levitsky <maximlevitsky@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: JMicron chipset update

Apparently, the values I was using to configure a jmicron memstick
interface only work with some chipset revisions. So they've sent me the
following message.

If you've got a working jmicron adapter handy, you may want to try these
changes.

-----------------
We found that there is a definition problem in your code about
JMicron MS Controller.
    Our new product would get problem with this part.
    Following is the bit definition in our code.

    // --- Clock Control Register - Offset 0x48 --- //
    // D[31:4] Reserved
    // D[3]    Force MMIO Control.  0: Control by PCI CNFG, 1: Control
by MMIO.
    // D[2:0]  Clock MUX Select
    #define MSHC_CLKMUX_CONTROL_BY_MMIO   0x00000008
    #define MSHC_CLKMUX_CLK_40MHZ                  0x00000001
    #define MSHC_CLKMUX_CLK_50MHZ                  0x00000002
    #define MSHC_CLKMUX_CLK_62_5MHZ              0x00000004
    #define MSHC_CLKMUX_CLK_60MHZ                  0x00000010  // Must
set PCICnfg Offset BCh D[0] to 1
    #define MSHC_CLKMUX_CLK_OFF                      0x00000000
    #define MSHC_CLKMUX_CLK_MASK                   0x00000017

    Driver have to set this register to 0x08 to clear default clock
setting.
    And then set its value with specfic clock setting (EX:  40MHz ->
0x09, 50MHz -> 0x0A) to change clock.
    (For MS Pro-HG, we suggest to use 50MHz with 8-bit parallel mode.)
   
    Besides, driver have to set the register to 40MHz setting before
identify MS card for safe.





      
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/