From patchwork Sat Mar 17 09:28:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 887288 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=csie.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 403KFj135Dz9sB7 for ; Sat, 17 Mar 2018 22:03:53 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752732AbeCQLDq (ORCPT ); Sat, 17 Mar 2018 07:03:46 -0400 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:59958 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752301AbeCQLDD (ORCPT ); Sat, 17 Mar 2018 07:03:03 -0400 Received: by wens.csie.org (Postfix, from userid 1000) id F015A5FDDB; Sat, 17 Mar 2018 18:56:27 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard , Michael Turquette , Stephen Boyd , Giuseppe Cavallaro , Rob Herring , Mark Rutland , Mark Brown Cc: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, Corentin Labbe , Icenowy Zheng Subject: [PATCH net-next 09/12] net: stmmac: dwmac-sun8i: Add support for GMAC on Allwinner R40 SoC Date: Sat, 17 Mar 2018 17:28:54 +0800 Message-Id: <20180317092857.4396-10-wens@csie.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180317092857.4396-1-wens@csie.org> References: <20180317092857.4396-1-wens@csie.org> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The Allwinner R40 SoC has the EMAC controller supported by dwmac-sun8i. It is named "GMAC", while EMAC refers to the 10/100 Mbps Ethernet controller supported by sun4i-emac. The controller is the same, but the R40 has the glue layer controls in the clock control unit (CCU), with a reduced RX delay chain, and no TX delay chain. This patch adds support for it using the framework laid out by previous patches to map the differences. Signed-off-by: Chen-Yu Tsai --- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index 08d263567a52..be6705e89e95 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -97,6 +97,13 @@ const struct reg_field sun8i_syscon_reg_field = { .msb = 31, }; +/* EMAC clock register @ 0x164 in the CCU address range */ +const struct reg_field sun8i_ccu_reg_field = { + .reg = 0x164, + .lsb = 0, + .msb = 31, +}; + static const struct emac_variant emac_variant_h3 = { .default_syscon_value = 0x58000, .syscon_field = &sun8i_syscon_reg_field, @@ -125,6 +132,15 @@ static const struct emac_variant emac_variant_a83t = { .tx_delay_max = 7, }; +static const struct emac_variant emac_variant_r40 = { + .default_syscon_value = 0, + .syscon_field = &sun8i_ccu_reg_field, + .syscon_from_dev = true, + .support_mii = true, + .support_rgmii = true, + .rx_delay_max = 7, +}; + static const struct emac_variant emac_variant_a64 = { .default_syscon_value = 0, .syscon_field = &sun8i_syscon_reg_field, @@ -1148,6 +1164,8 @@ static const struct of_device_id sun8i_dwmac_match[] = { .data = &emac_variant_v3s }, { .compatible = "allwinner,sun8i-a83t-emac", .data = &emac_variant_a83t }, + { .compatible = "allwinner,sun8i-r40-gmac", + .data = &emac_variant_r40 }, { .compatible = "allwinner,sun50i-a64-emac", .data = &emac_variant_a64 }, { }