mail archive of the barebox mailing list
 help / color / mirror / Atom feed
From: Michael Riesch <michael.riesch@wolfvision.net>
To: barebox@lists.infradead.org
Cc: Michael Riesch <michael.riesch@wolfvision.net>
Subject: [RFC PATCH 1/2] arm: rockchip-rk3568-evb: add hardware id detection
Date: Tue, 29 Jun 2021 14:31:03 +0200	[thread overview]
Message-ID: <20210629123104.13818-2-michael.riesch@wolfvision.net> (raw)
In-Reply-To: <20210629123104.13818-1-michael.riesch@wolfvision.net>

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
---
 arch/arm/boards/rockchip-rk3568-evb/board.c | 36 +++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm/boards/rockchip-rk3568-evb/board.c b/arch/arm/boards/rockchip-rk3568-evb/board.c
index 57c24ed3c..ee8e1b979 100644
--- a/arch/arm/boards/rockchip-rk3568-evb/board.c
+++ b/arch/arm/boards/rockchip-rk3568-evb/board.c
@@ -2,6 +2,7 @@
 #include <common.h>
 #include <init.h>
 #include <mach/bbu.h>
+#include <aiodev.h>
 #include <bootsource.h>
 
 static int rk3568_evb_probe(struct device_d *dev)
@@ -34,3 +35,38 @@ static struct driver_d rk3568_evb_board_driver = {
 	.of_compatible = rk3568_evb_of_match,
 };
 coredevice_platform_driver(rk3568_evb_board_driver);
+
+static int rk3568_evb_detect_version(void)
+{
+	int ret = 0;
+	int evb_hw_id = 0;
+	int evb_hw_id_voltage = 1800;
+	struct aiochannel *evb_hw_id_chan;
+
+	evb_hw_id_chan = aiochannel_by_name("aiodev0.in_value1_mV");
+	if (!IS_ERR(evb_hw_id_chan))
+		ret = aiochannel_get_value(evb_hw_id_chan, &evb_hw_id_voltage);
+	if (ret || IS_ERR(evb_hw_id_chan))
+		pr_warn("couldn't retrieve hardware ID");
+
+	if (evb_hw_id_voltage > 1650) {
+		evb_hw_id = 1;
+	} else if (evb_hw_id_voltage > 1350) {
+		evb_hw_id = 2;
+	} else if (evb_hw_id_voltage > 1050) {
+		evb_hw_id = 3;
+	} else if (evb_hw_id_voltage > 750) {
+		evb_hw_id = 4;
+	} else if (evb_hw_id_voltage > 450) {
+		evb_hw_id = 5;
+	} else if (evb_hw_id_voltage > 150) {
+		evb_hw_id = 6;
+	} else {
+		evb_hw_id = 7;
+	}
+
+	pr_info("Detected RK3568 EVB%d\n", evb_hw_id);
+
+	return 0;
+}
+late_initcall(rk3568_evb_detect_version);
-- 
2.20.1


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox


  reply	other threads:[~2021-06-29 12:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-29 12:31 [RFC PATCH 0/2] Proof of concept device tree overlays Michael Riesch
2021-06-29 12:31 ` Michael Riesch [this message]
2021-06-30 10:17   ` [RFC PATCH 1/2] arm: rockchip-rk3568-evb: add hardware id detection Ahmad Fatoum
2021-07-01  7:19     ` Michael Riesch
2021-07-03 20:49     ` Sascha Hauer
2021-06-29 12:31 ` [RFC PATCH 2/2] arm: rockchip-rk3568-evb: apply dt overlay for evb7 Michael Riesch
2021-06-29 21:58   ` Trent Piepho
2021-06-30  9:18     ` Michael Riesch

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210629123104.13818-2-michael.riesch@wolfvision.net \
    --to=michael.riesch@wolfvision.net \
    --cc=barebox@lists.infradead.org \
    --subject='Re: [RFC PATCH 1/2] arm: rockchip-rk3568-evb: add hardware id detection' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox