Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754548AbdC1Gu1 (ORCPT ); Tue, 28 Mar 2017 02:50:27 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:58555 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754450AbdC1GuZ (ORCPT ); Tue, 28 Mar 2017 02:50:25 -0400 Message-ID: <1490683817.14184.49.camel@mtkswgap22> Subject: Re: [PATCH net-next v2 5/5] net-next: dsa: add dsa support for Mediatek MT7530 switch From: Sean Wang To: Andrew Lunn CC: , , , , , , , , , , , , Date: Tue, 28 Mar 2017 14:50:17 +0800 In-Reply-To: <20170324141953.GH28518@lunn.ch> References: <1490088910-19405-1-git-send-email-sean.wang@mediatek.com> <1490088910-19405-6-git-send-email-sean.wang@mediatek.com> <20170324141953.GH28518@lunn.ch> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit MIME-Version: 1.0 X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4104 Lines: 147 Hi Andrew On Fri, 2017-03-24 at 15:19 +0100, Andrew Lunn wrote: > On Tue, Mar 21, 2017 at 05:35:10PM +0800, sean.wang@mediatek.com wrote: > > Hi Sean > > > + /* Lower Tx Driving */ > > + for (i = 0 ; i < 6 ; i++) > > Could MT7530_CPU_PORT be used here? > I should create meaningful definition instead of avoiding hard coding where 6 should be corrected into 5 which is meant for the number for control register to configure TRGMII path > > + mt7530_write(priv, MT7530_TRGMII_TD_ODT(i), > > + TD_DM_DRVP(8) | TD_DM_DRVN(8)); > > + > > + /* Setup MT7530 core clock */ > > + if (!trgint) { > > + /* Disable MT7530 core clock */ > > + core_clear(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); > > + > > + /* Disable MT7530 PLL, since phy_device has not yet been > > + * created when this function is called. So we provide > > + * core_write_mmd_indirect to complete this function > > + */ > > + core_write_mmd_indirect(priv, > > + CORE_GSWPLL_GRP1, > > + MDIO_MMD_VEND2, > > + 0); > > + > > + /* Setup MT7530 core clock into 500Mhz */ > > + core_write(priv, CORE_GSWPLL_GRP2, > > + RG_GSWPLL_POSDIV_500M(1) | > > + RG_GSWPLL_FBKDIV_500M(25)); > > + > > + /* Enable MT7530 PLL */ > > + core_write(priv, CORE_GSWPLL_GRP1, > > + RG_GSWPLL_EN_PRE | > > + RG_GSWPLL_POSDIV_200M(2) | > > + RG_GSWPLL_FBKDIV_200M(32)); > > + > > + /* Enable MT7530 core clock */ > > + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); > > + } > > + > > + /* Setup the MT7530 TRGMII Tx Clock */ > > + core_set(priv, CORE_TRGMII_GSW_CLK_CG, REG_GSWCK_EN); > > + core_write(priv, CORE_PLL_GROUP5, RG_LCDDS_PCW_NCPO1(ncpo1)); > > + core_write(priv, CORE_PLL_GROUP6, RG_LCDDS_PCW_NCPO0(0)); > > + core_write(priv, CORE_PLL_GROUP10, RG_LCDDS_SSC_DELTA(ssc_delta)); > > + core_write(priv, CORE_PLL_GROUP11, RG_LCDDS_SSC_DELTA1(ssc_delta)); > > + core_write(priv, CORE_PLL_GROUP4, > > + RG_SYSPLL_DDSFBK_EN | RG_SYSPLL_BIAS_EN | > > + RG_SYSPLL_BIAS_LPF_EN); > > + core_write(priv, CORE_PLL_GROUP2, > > + RG_SYSPLL_EN_NORMAL | RG_SYSPLL_VODEN | > > + RG_SYSPLL_POSDIV(1)); > > + core_write(priv, CORE_PLL_GROUP7, > > + RG_LCDDS_PCW_NCPO_CHG | RG_LCCDS_C(3) | > > + RG_LCDDS_PWDB | RG_LCDDS_ISO_EN); > > + core_set(priv, CORE_TRGMII_GSW_CLK_CG, > > + REG_GSWCK_EN | REG_TRGMIICK_EN); > > + > > + if (!trgint) > > + for (i = 0 ; i < 5 ; i++) > > Why only 5 here? All other similar loops are to 6. Replacing 5 with a > #define might help make this more readable. the same as above, it should be corrected > > + mt7530_rmw(priv, MT7530_TRGMII_RD(i), > > + RD_TAP_MASK, RD_TAP(16)); > > + else > > + mt7623_trgmii_set(priv, GSW_INTF_MODE, INTF_MODE_TRGMII); > > + > > + return 0; > > +} > > + > > +static int > > +mt7623_pad_clk_setup(struct dsa_switch *ds) > > +{ > > + struct mt7530_priv *priv = ds->priv; > > + int i; > > + > > + for (i = 0 ; i < 6; i++) > > MT7530_CPU_PORT? the same as above , it should be corrected > > + > > +/* Registers to mac forward conrol for unknown frames */ > > /conrol/control > will fix it up > > + > > +/* Registor for port control */ > > Register > will fix it up > > +/* Regiser for TOP signal control */ > > Register > will fix it up > > +/* struct mt7530_priv - This is the main datasructure for holding the state > > data structure > > > + * of the driver > > + * @dev: The device pointer > > + * @ds: The pointer to the dsa core structure > > + * @bus: The bus used for the device and built-in PHY > > + * @ethsys: The regmap used for enabling the necessary PLL > > + * @ethernet: The regmap used for access TRGMII-based registers > > + * @core_pwr: The power supplied into the core > > + * @io_pwr: The power supplied into the I/O > > + * @mcm: Flag for distinguishing if standalone IC or module > > + * coupling > > + * @reset: The descriptor for GPIO line tied to its reset pin > > + * @phy_mode: The xMII for cpu port used > > + * @ports: Holding the state amongs ports > > among will fix it up thank for your careful reviewing again!! > Andrew