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X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 21/31] net: davinci_mdio: Use fallback clock rate X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On AM62L There is a clock attached to the mdio block, but the TF-A returns 0 for its rate. Use 256MHz as fallback rate when we don't find a valid clock rate. Signed-off-by: Sascha Hauer --- drivers/net/davinci_mdio.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/davinci_mdio.c b/drivers/net/davinci_mdio.c index 1186642e1337b603f541f6bdf19ac2d2792f4994..ca7cecd2c08488cfa7a12d9cf8947e27722b916c 100644 --- a/drivers/net/davinci_mdio.c +++ b/drivers/net/davinci_mdio.c @@ -112,17 +112,18 @@ static int cpsw_mdio_write(struct mii_bus *bus, int phy_id, int phy_reg, u16 val static void cpsw_mdio_init_clk(struct cpsw_mdio_priv *priv) { - u32 mdio_in, clk_div; + u32 mdio_in = 0, clk_div; u32 bus_freq = 1000000; of_property_read_u32(priv->dev->of_node, "bus_freq", &bus_freq); priv->clk = clk_get_enabled(priv->dev, "fck"); - if (IS_ERR(priv->clk)) - mdio_in = 256000000; - else + if (!IS_ERR(priv->clk)) mdio_in = clk_get_rate(priv->clk); + if (mdio_in == 0) + mdio_in = 256000000; + clk_div = (mdio_in / bus_freq) - 1; if (clk_div > CONTROL_MAX_DIV) clk_div = CONTROL_MAX_DIV; -- 2.39.5