Ping... > -----Original Message----- > From: Dong Aisheng [mailto:aisheng.dong@xxxxxxx] > Sent: Tuesday, June 13, 2017 10:56 AM > To: linux-serial@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > gregkh@xxxxxxxxxxxxxxxxxxx; jslaby@xxxxxxxx; Andy Duan; stefan@xxxxxxxx; > Mingkai Hu; Y.b. Lu; nikita.yoush@xxxxxxxxxxxxxxxxxx; > andy.shevchenko@xxxxxxxxx; dongas86@xxxxxxxxx; A.s. Dong > Subject: [PATCH V4 0/7] tty: serial: lpuart: add imx7ulp support > > The lpuart in imx7ulp is basically the same as ls1021a. It's also > 32 bit width register, but unlike ls1021a, it's little endian. > Besides that, imx7ulp lpuart has a minor different register layout from > ls1021a that it has four extra registers (verid, param, global, > pincfg) located at the beginning of register map, which are currently not > used by the driver and less to be used later. > > Furthermore, this patch serial also add a new more accurate baud rate > calculation method as MX7ULP can't divide a suitable baud rate with the > default setting. > > Currently the new baud rate calculation is only enabled on MX7ULP. > However, i guess the Layerscape may also be able to use it as there seems > to be no difference in baud rate setting register after checking the > Layerscape Reference Manual. > > As i don't have Layerscape boards, i can't test it, so i only enable it > for MX7ULP by default to avoid a potential break. > > I copied LayerScape guys in this series and hope they can help test later. > If it works on Layerscape as well, then they can switch to the new setting > too and totally remove the old stuff. > > ChangeLog: > v3->v4: > * Minor changes. > 1) Remove one duplicated blank line > 2) Removed on unneeded semicolon in switch catched by 0day Robot > v2->v3: > * Remove global lpuart_is_be. > Instead use struct uart_port's iotype member. > lpuart32_read/write API prototype is also updated to use the iotype to > distingush the endians. And most importantly, this way also works with > earlycon. > > v1->v2: > * Patch 2/4/5 chagned, other no changes. > See individuals for details. > > Dong Aisheng (7): > tty: serial: lpuart: introduce lpuart_soc_data to represent SoC > property > tty: serial: lpuart: refactor lpuart32_{read|write} prototype > tty: serial: lpuart: add little endian 32 bit register support > dt-bindings: serial: fsl-lpuart: add i.MX7ULP support > tty: serial: lpuart: add imx7ulp support > tty: serial: lpuart: add earlycon support for imx7ulp > tty: serial: lpuart: add a more accurate baud rate calculation method > > .../devicetree/bindings/serial/fsl-lpuart.txt | 2 + > drivers/tty/serial/fsl_lpuart.c | 286 ++++++++++++++-- > ----- > 2 files changed, 201 insertions(+), 87 deletions(-) > > -- > 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
