From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9E9EBCCD1AB for ; Tue, 21 Oct 2025 22:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YYiwxQZmhBsxppAhJBTNCgyy5OGPg8yswSVtq46S0rM=; b=3DEq+ilzg+jPY5 jaTJTvirO5V6+CMZG0F98aDyjvE8NAB+bKBqJH98FoFo72J8hyw5JeJBZWWnQFn8qHqpAbAblHkSw Fyjm8+MKMq0JfInFLM7H/n9cApXnLVUjRu7sREeT3E3ltnjRDtnKSyn3rhXkTdAZtJEDL1XfxuzuH NMT/WYnaLWOy4T8qxEtOuJIsJYGD/kUGEDQmlkHDoAfjSP3nBg1zsAKwjSpGQl7J8Gdy35TewXXyz ngZQBg8DgzlqWjLtM90ZtSis0Vh0IjyoxaOWLkqzJsfSfRnyB4XGMAbu09UoC85/7g25z0Y+8eQ0b 36orprS5p5i9+ErKzy7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vBL63-00000000q5M-1Hzl; Tue, 21 Oct 2025 22:44:51 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vBL5l-00000000pjh-2jNL; Tue, 21 Oct 2025 22:44:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type; bh=k337ivC7NrcTNieDT0Q2eCyvA/Xn4/BzwHpob3IicHE=; b=EEWtocEYifRPL35M5DCVbhER71 srkwVoDTTN1rShvLxlZPgXDd+EDeu3IKVfHdF/KCQNwpEXi85il3xhUFF03wq7Kyvj2+HhbbwyNYs s9CI6ljwDopEZw4/6xul6a/r5YfLVIMuwhhOlVisR9QHW8Magow4D5i57wZj/QKib4p//Wm4Ev79l 0D+ID/rOm4R3g8/SsRIrbUcl4QD7QF8rPZxyTw+aKrFbiQiTKjgzP2f8Ve2Snb/2npiCAQlXbVkle Oyp511ZNscRpQ0oVf8eVxnFW91yvE7J2QamQV7S6t77Rt+DQ1hvYY4GZZMVV1TccxgkNW2mbdSyAy WtItemvQ==; Received: from i53875b19.versanet.de ([83.135.91.25] helo=phil.fritz.box) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1vBL5e-0006q7-2z; Wed, 22 Oct 2025 00:44:26 +0200 From: Heiko Stuebner To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, heiko@sntech.de, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, David Wu Subject: [PATCH 4/4] ethernet: stmmac: dwmac-rk: Add RK3506 GMAC support Date: Wed, 22 Oct 2025 00:43:57 +0200 Message-ID: <20251021224357.195015-5-heiko@sntech.de> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20251021224357.195015-1-heiko@sntech.de> References: <20251021224357.195015-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251021_154433_689598_A2477C7B X-CRM114-Status: GOOD ( 15.31 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org From: David Wu Add the needed glue blocks for the RK3506-specific setup. The RK3506 dwmac only supports up to 100MBit with a RMII PHY, but no RGMII. Signed-off-by: David Wu Signed-off-by: Heiko Stuebner --- .../net/ethernet/stmicro/stmmac/dwmac-rk.c | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c index 51ea0caf16c1..e1e036e7163c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -827,6 +827,84 @@ static const struct rk_gmac_ops rk3399_ops = { .set_speed = rk3399_set_speed, }; +#define RK3506_GRF_SOC_CON8 0X0020 +#define RK3506_GRF_SOC_CON11 0X002c + +#define RK3506_GMAC_RMII_MODE GRF_BIT(1) + +#define RK3506_GMAC_CLK_RMII_DIV2 GRF_BIT(3) +#define RK3506_GMAC_CLK_RMII_DIV20 GRF_CLR_BIT(3) + +#define RK3506_GMAC_CLK_SELET_CRU GRF_CLR_BIT(5) +#define RK3506_GMAC_CLK_SELET_IO GRF_BIT(5) + +#define RK3506_GMAC_CLK_RMII_GATE GRF_BIT(2) +#define RK3506_GMAC_CLK_RMII_NOGATE GRF_CLR_BIT(2) + +static void rk3506_set_to_rmii(struct rk_priv_data *bsp_priv) +{ + struct device *dev = bsp_priv->dev; + unsigned int id = bsp_priv->id, offset; + + if (IS_ERR(bsp_priv->grf)) { + dev_err(dev, "%s: Missing rockchip,grf property\n", __func__); + return; + } + + offset = (id == 1) ? RK3506_GRF_SOC_CON11 : RK3506_GRF_SOC_CON8; + regmap_write(bsp_priv->grf, offset, RK3506_GMAC_RMII_MODE); +} + +static int rk3506_set_speed(struct rk_priv_data *bsp_priv, + phy_interface_t interface, int speed) +{ + struct device *dev = bsp_priv->dev; + unsigned int val, offset, id = bsp_priv->id; + + switch (speed) { + case 10: + val = RK3506_GMAC_CLK_RMII_DIV20; + break; + case 100: + val = RK3506_GMAC_CLK_RMII_DIV2; + break; + default: + dev_err(dev, "unknown speed value for RMII! speed=%d", speed); + return -EINVAL; + } + + offset = (id == 1) ? RK3506_GRF_SOC_CON11 : RK3506_GRF_SOC_CON8; + regmap_write(bsp_priv->grf, offset, val); + + return 0; +} + +static void rk3506_set_clock_selection(struct rk_priv_data *bsp_priv, + bool input, bool enable) +{ + unsigned int value, offset, id = bsp_priv->id; + + offset = (id == 1) ? RK3506_GRF_SOC_CON11 : RK3506_GRF_SOC_CON8; + + value = input ? RK3506_GMAC_CLK_SELET_IO : + RK3506_GMAC_CLK_SELET_CRU; + value |= enable ? RK3506_GMAC_CLK_RMII_NOGATE : + RK3506_GMAC_CLK_RMII_GATE; + regmap_write(bsp_priv->grf, offset, value); +} + +static const struct rk_gmac_ops rk3506_ops = { + .set_to_rmii = rk3506_set_to_rmii, + .set_speed = rk3506_set_speed, + .set_clock_selection = rk3506_set_clock_selection, + .regs_valid = true, + .regs = { + 0xff4c8000, /* gmac0 */ + 0xff4d0000, /* gmac1 */ + 0x0, /* sentinel */ + }, +}; + #define RK3528_VO_GRF_GMAC_CON 0x0018 #define RK3528_VO_GRF_MACPHY_CON0 0x001c #define RK3528_VO_GRF_MACPHY_CON1 0x0020 @@ -1808,6 +1886,7 @@ static const struct of_device_id rk_gmac_dwmac_match[] = { { .compatible = "rockchip,rk3366-gmac", .data = &rk3366_ops }, { .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops }, { .compatible = "rockchip,rk3399-gmac", .data = &rk3399_ops }, + { .compatible = "rockchip,rk3506-gmac", .data = &rk3506_ops }, { .compatible = "rockchip,rk3528-gmac", .data = &rk3528_ops }, { .compatible = "rockchip,rk3568-gmac", .data = &rk3568_ops }, { .compatible = "rockchip,rk3576-gmac", .data = &rk3576_ops }, -- 2.47.2 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip