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Thu, 9 Jul 2020 08:17:05 +0000 From: peng.fan@nxp.com To: sbabic@denx.de, festevam@gmail.com Cc: uboot-imx@nxp.com, u-boot@lists.denx.de, Peng Fan Subject: [PATCH 04/11] imx8m: add eqos clk Date: Thu, 9 Jul 2020 16:40:35 +0800 Message-Id: <20200709084042.8234-5-peng.fan@nxp.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200709084042.8234-1-peng.fan@nxp.com> References: <20200709084042.8234-1-peng.fan@nxp.com> X-ClientProxiedBy: SG2PR06CA0182.apcprd06.prod.outlook.com (2603:1096:4:1::14) To DB6PR0402MB2760.eurprd04.prod.outlook.com (2603:10a6:4:a1::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from linux-1xn6.ap.freescale.net (119.31.174.71) by SG2PR06CA0182.apcprd06.prod.outlook.com (2603:1096:4:1::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3174.20 via Frontend Transport; Thu, 9 Jul 2020 08:17:03 +0000 X-Mailer: git-send-email 2.16.4 X-Originating-IP: [119.31.174.71] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: e3b0b50e-0db4-447e-b7bf-08d823e0775d X-MS-TrafficTypeDiagnostic: DB6PR0402MB2759: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4303; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: e3b0b50e-0db4-447e-b7bf-08d823e0775d X-MS-Exchange-CrossTenant-AuthSource: DB6PR0402MB2760.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jul 2020 08:17:05.7291 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9BmJ7KIKap5nyOQfRyUKsvu1zlC4QkGXAAAuJBAfbXI2akQauWB5dgdmQmyZkbsbK8cMSAQQHxv2eR2N8fEOwA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0402MB2759 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean From: Peng Fan Add imx_eqos_txclk_set_rate/imx_get_eqos_csr_clk to override the weak function in driver Add set_clk_eqos to configure eQoS clk Signed-off-by: Peng Fan --- arch/arm/mach-imx/imx8m/clock_imx8mm.c | 90 ++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) diff --git a/arch/arm/mach-imx/imx8m/clock_imx8mm.c b/arch/arm/mach-imx/imx8m/clock_imx8mm.c index 68effbd54f..3610f5b2fc 100644 --- a/arch/arm/mach-imx/imx8m/clock_imx8mm.c +++ b/arch/arm/mach-imx/imx8m/clock_imx8mm.c @@ -788,6 +788,96 @@ u32 mxc_get_clock(enum mxc_clock clk) return 0; } +#ifdef CONFIG_DWC_ETH_QOS +int set_clk_eqos(enum enet_freq type) +{ + u32 target; + u32 enet1_ref; + + switch (type) { + case ENET_125MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_125M_CLK; + break; + case ENET_50MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_50M_CLK; + break; + case ENET_25MHZ: + enet1_ref = ENET1_REF_CLK_ROOT_FROM_PLL_ENET_MAIN_25M_CLK; + break; + default: + return -EINVAL; + } + + /* disable the clock first */ + clock_enable(CCGR_QOS_ETHENET, 0); + clock_enable(CCGR_SDMA2, 0); + + /* set enet axi clock 266Mhz */ + target = CLK_ROOT_ON | ENET_AXI_CLK_ROOT_FROM_SYS1_PLL_266M | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); + clock_set_target_val(ENET_AXI_CLK_ROOT, target); + + target = CLK_ROOT_ON | enet1_ref | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV1); + clock_set_target_val(ENET_QOS_CLK_ROOT, target); + + target = CLK_ROOT_ON | + ENET1_TIME_CLK_ROOT_FROM_PLL_ENET_MAIN_100M_CLK | + CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(CLK_ROOT_POST_DIV4); + clock_set_target_val(ENET_QOS_TIMER_CLK_ROOT, target); + + /* enable clock */ + clock_enable(CCGR_QOS_ETHENET, 1); + clock_enable(CCGR_SDMA2, 1); + + return 0; +} + +int imx_eqos_txclk_set_rate(u32 rate) +{ + u32 val; + u32 eqos_post_div; + + /* disable the clock first */ + clock_enable(CCGR_QOS_ETHENET, 0); + clock_enable(CCGR_SDMA2, 0); + + switch (rate) { + case 125000000: + eqos_post_div = 1; + break; + case 25000000: + eqos_post_div = 125000000 / 25000000; + break; + case 2500000: + eqos_post_div = 125000000 / 2500000; + break; + default: + return -EINVAL; + } + + clock_get_target_val(ENET_QOS_CLK_ROOT, &val); + val &= ~(CLK_ROOT_PRE_DIV_MASK | CLK_ROOT_POST_DIV_MASK); + val |= CLK_ROOT_PRE_DIV(CLK_ROOT_PRE_DIV1) | + CLK_ROOT_POST_DIV(eqos_post_div - 1); + clock_set_target_val(ENET_QOS_CLK_ROOT, val); + + /* enable clock */ + clock_enable(CCGR_QOS_ETHENET, 1); + clock_enable(CCGR_SDMA2, 1); + + return 0; +} + +u32 imx_get_eqos_csr_clk(void) +{ + return get_root_clk(ENET_AXI_CLK_ROOT); +} +#endif + #ifdef CONFIG_FEC_MXC int set_clk_enet(enum enet_freq type) {