From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tudor Ambarus Subject: [RFC PATCH 2/2] i2c: at91: provide bus_freq_hz Date: Mon, 26 Mar 2018 14:19:27 +0300 Message-ID: <20180326111927.16040-2-tudor.ambarus@microchip.com> References: <20180326111927.16040-1-tudor.ambarus@microchip.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180326111927.16040-1-tudor.ambarus@microchip.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: wsa@the-dreams.de, ludovic.desroches@microchip.com, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Tudor Ambarus List-Id: linux-i2c@vger.kernel.org The clock-frequency property is not mandatory for the i2c buses. If it's not present in device tree, the buses usually assume that is 100kHZ. There are i2c clients that need to know the clock frequency in order to compute their wake token. Spare the clients of making (wrong) assumptions and provide the bus frequency in adapter. Signed-off-by: Tudor Ambarus --- drivers/i2c/busses/i2c-at91.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index bfd1fdf..d3cd84e 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -1116,6 +1116,7 @@ static int at91_twi_probe(struct platform_device *pdev) dev->adapter.quirks = &at91_twi_quirks; dev->adapter.dev.parent = dev->dev; dev->adapter.nr = pdev->id; + dev->adapter.bus_freq_hz = bus_clk_rate; dev->adapter.timeout = AT91_I2C_TIMEOUT; dev->adapter.dev.of_node = pdev->dev.of_node; -- 2.9.4