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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.6 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [RFC PATCH 1/2] arm: rockchip-rk3568-evb: add hardware id detection X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Signed-off-by: Michael Riesch --- 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 #include #include +#include #include 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