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Date: Mon, 21 Feb 2022 16:26:27 +0800 From: Yu Tu <yu.tu@...ogic.com> To: Jerome Brunet <jbrunet@...libre.com>, Jiri Slaby <jirislaby@...nel.org>, <linux-serial@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-amlogic@...ts.infradead.org>, <linux-kernel@...r.kernel.org> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Neil Armstrong <narmstrong@...libre.com>, Kevin Hilman <khilman@...libre.com>, Martin Blumenstingl <martin.blumenstingl@...glemail.com> Subject: Re: [PATCH V6 3/5] tty: serial: meson: Describes the calculation of the UART baud rate clock using a clock frame On 2022/1/21 5:48, Jerome Brunet wrote: > [ EXTERNAL EMAIL ] > > > On Tue 18 Jan 2022 at 10:39, Jiri Slaby <jirislaby@...nel.org> wrote: > >> On 18. 01. 22, 4:09, Yu Tu wrote: >>> Using the common Clock code to describe the UART baud rate clock >>> makes it easier for the UART driver to be compatible with the >>> baud rate requirements of the UART IP on different meson chips. >> ... >>> --- a/drivers/tty/serial/meson_uart.c >>> +++ b/drivers/tty/serial/meson_uart.c >> ... >>> @@ -629,57 +640,105 @@ static struct uart_driver meson_uart_driver = { >>> .cons = MESON_SERIAL_CONSOLE, >>> }; >>> -static inline struct clk *meson_uart_probe_clock(struct device *dev, >>> - const char *id) >>> -{ >>> - struct clk *clk = NULL; >>> - int ret; >>> - >>> - clk = devm_clk_get(dev, id); >>> - if (IS_ERR(clk)) >>> - return clk; >>> - >>> - ret = clk_prepare_enable(clk); >>> - if (ret) { >>> - dev_err(dev, "couldn't enable clk\n"); >>> - return ERR_PTR(ret); >>> - } >>> - >>> - devm_add_action_or_reset(dev, >>> - (void(*)(void *))clk_disable_unprepare, >>> - clk); >>> - >>> - return clk; >>> -} >>> +static struct clk_div_table xtal_div_table[] = { >> >> This can be const, right? >> >>> + {0, 3}, >>> + {1, 1}, >>> + {2, 2}, >>> + {3, 2}, >> >> Not sure if you didn't remove too much whitespace. I think it should be >> like: "{ 0, 3 },". But I actually don't care, it's a minor thing. > > Seconds > It worth fixing in the next version > I will correct in a version. >> >> I cannot comment on the rest (clk and OF part) as my knowledge is pretty >> limited there. Leaving up to others. >> >> thanks, >
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