From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jWFF3-0005wJ-Qp for barebox@lists.infradead.org; Wed, 06 May 2020 08:17:25 +0000 From: Sascha Hauer Date: Wed, 6 May 2020 10:17:11 +0200 Message-Id: <20200506081716.20143-8-s.hauer@pengutronix.de> In-Reply-To: <20200506081716.20143-1-s.hauer@pengutronix.de> References: <20200506081716.20143-1-s.hauer@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 08/13] ARM: mxs: Increase VDDD voltage to match specification To: Barebox List Adoption of U-Boot commit: | commit b4a2cdc13ed886b981e8fcd3087293ba9296f17f | Author: Marek Vasut | Date: Tue Oct 15 18:26:57 2019 +0200 | | arm: mxs: Increase VDDD voltage to match specification | | According to IMX28CEC rev. 4, 10/2018, Table 15. Recommended Operating | Conditions, page 16, the VDDD should be set to 1.55V when the CPU is | operating at 454MHz. This is the case in U-Boot, hence increase the | VDDD voltage. This fixes instability when performing TFTP transfers. | Increase the brownout threshold to 1.4V. The documentation recommends | 1.45V setting for the brownout, however, this triggers failure during | power block init, so keep the brownout slightly lower. | | Signed-off-by: Marek Vasut | Cc: Stefano Babic | Reviewed-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-mxs/power-init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-mxs/power-init.c b/arch/arm/mach-mxs/power-init.c index ca7c349d7f..c89f1f5f5d 100644 --- a/arch/arm/mach-mxs/power-init.c +++ b/arch/arm/mach-mxs/power-init.c @@ -1172,7 +1172,7 @@ static void mx23_ungate_power(void) writel(MX23_POWER_CTRL_CLKGATE, &power_regs->hw_power_ctrl_clr); } -struct mxs_power_ctrl mxs_vddd_default = { .target = 1500, .brownout = 1325 }; +struct mxs_power_ctrl mxs_vddd_default = { .target = 1550, .brownout = 1400 }; struct mxs_power_ctrl mxs_vdda_default = { .target = 1800, .brownout = 1650 }; struct mxs_power_ctrl mxs_vddio_default = { .target = 3300, .brownout = 3150 }; struct mxs_power_ctrl mx23_vddmem_default = { .target = 2500, .brownout = 1700 }; -- 2.26.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox