From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([85.220.165.71]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fVZls-0000Ms-IY for barebox@lists.infradead.org; Wed, 20 Jun 2018 09:51:26 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7] helo=dude.pengutronix.de.) by metis.ext.pengutronix.de with esmtp (Exim 4.89) (envelope-from ) id 1fVZlg-0005UX-Ur for barebox@lists.infradead.org; Wed, 20 Jun 2018 11:51:12 +0200 From: Lucas Stach Date: Wed, 20 Jun 2018 11:51:12 +0200 Message-Id: <20180620095112.14944-1-l.stach@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH] ARM: rdu2: program e1000 iNVM To: barebox@lists.infradead.org Check if the iNVM is already correctly written. If it isn't write the correct value in, so the device uses the correct PCI ID for the Linux driver. Signed-off-by: Lucas Stach --- arch/arm/boards/zii-imx6q-rdu2/board.c | 29 ++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm/boards/zii-imx6q-rdu2/board.c b/arch/arm/boards/zii-imx6q-rdu2/board.c index 265f97e2f464..984ca42a3772 100644 --- a/arch/arm/boards/zii-imx6q-rdu2/board.c +++ b/arch/arm/boards/zii-imx6q-rdu2/board.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include @@ -151,3 +152,31 @@ static int rdu2_devices_init(void) return 0; } device_initcall(rdu2_devices_init); + +static int rdu2_i210_invm(void) +{ + int fd; + u32 val; + + if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") && + !of_machine_is_compatible("zii,imx6qp-zii-rdu2")) + return 0; + + fd = open("/dev/e1000-invm0", O_RDWR); + if (fd < 0) { + pr_err("could not open e1000 iNVM device!\n"); + return fd; + } + + pread(fd, &val, sizeof(val), 0); + if (val == 0x157b1a11) { + pr_debug("i210 already programmed correctly\n"); + return 0; + } + + val = 0x157b1a11; + pwrite(fd, &val, sizeof(val), 0); + + return 0; +} +late_initcall(rdu2_i210_invm); -- 2.17.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox