u-boot.git/drivers/serial, branch v2022.10-rc2

serial: zynq: Use DIV_ROUND_CLOSEST() to calcurate divider value

2022-07-26T06:23:55Z

Since the calulation of "bgen" is rounded down, using a higher baudrate will result in a larger difference from the actual baudrate. Should use DIV_ROUND_CLOSEST() like the Linux driver. Signed-off-by: Kunihiko Hayashi Link: https://lore.kernel.org/r/1657676339-6055-1-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Michal Simek

serial: ns16550: Wait in debug_uart_init until tx buffer is empty

2022-07-08T16:20:04Z

Commit d293759d55cc ("serial: ns16550: Add support for SPL_DEBUG_UART_BASE") fixed support for setting correct early debug UART base address in SPL. But after this commit, output from Marvell A385 BootROM is truncated or lost and not fully present on serial console. Debugging this issue showed that BootROM just put bytes into UART HW output buffer and does not wait until UART HW transmit all characters. U-Boot ns16550 early debug is initialized very early and during its initialization is resetting UART HW and flushing remaining transmit buffer (which still contains BootROM output). Fix this issue by waiting in init function prior resetting UART HW until TxEmpty bit in UART Line Status Register is set. TxEmpty is set when all remaining bytes from HW buffer are transmitted. Signed-off-by: Pali Rohár Reviewed-by: Stefan Roese [trini: Add comment, move ';' to new line per checkpatch.pl] Signed-off-by: Tom Rini

arm: Remove PXA architecture support

2022-07-07T13:29:08Z

With the last platform for this architecture removed, remove the rest of the architecture support as well. Cc: Marek Vasut Signed-off-by: Tom Rini Reviewed-by: Simon Glass

Merge tag 'xilinx-for-v2022.10' of https://source.denx.de/u-boot/custodians/u-boot-microblaze into next

2022-06-27T14:15:50Z

Xilinx changes for v2022.10 cpu: - Add driver for microblaze cpu net: - Add support for DM_ETH_PHY to AXI emac and emaclite xilinx: - Switch platforms to DM_ETH_PHY - DT chagnes in ZynqMP and Zynq - Enable support for SquashFS zynqmp: - Add support for KR260 boards - Move BSS from address 0 - Move platform identification from board code to soc driver - Improve zynqmp_psu_init_minimize versal: - Enable loading app at EL1 serial: - Setup default address and clock rates for DEBUG uarts pinctrl: - Add support for tri state and output enable properties relocate-rela: - Clean relocate-rela implementation for ARM64 - Add support for Microblaze microblaze: - Add support for runtime relocation - Rework cache handling (wiring, Kconfig) based on cpuinfo - Remove interrupt support timer: - Extract axi timer driver from Microblaze to generic location

serial: Setup serial base and freq for zynq/zynqmp

2022-06-24T12:11:05Z

Setup default values for debug console, base address and frequency. Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/ce93efd3ed67aa6390810ce0b79e0d00e7c36b4b.1652871485.git.michal.simek@amd.com

serial: sandbox: Fix buffer underflow in puts

2022-06-23T16:58:18Z

Fix the buffer underflow that would occur if puts is called with length of zero. Fixes: efa51f2bd64 ("serial: sandbox: Implement puts") Cc: Sean Anderson Cc: Simon Glass Reviewed-by: Sean Anderson

serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE)

2022-06-06T22:01:21Z

CONFIG_VAL(DEBUG_UART_BASE) expands to CONFIG_DEBUG_UART_BASE or CONFIG_SPL_DEBUG_UART_BASE or CONFIG_TPL_DEBUG_UART_BASE and allows boards to set different values for SPL, TPL and U-Boot Proper. For ns16550 driver this support is there since commit d293759d55cc ("serial: ns16550: Add support for SPL_DEBUG_UART_BASE"). Signed-off-by: Pali Rohár

serial: smh: Fake tstc

2022-06-06T22:01:21Z

ARM semihosting provides no provisions for determining if there is pending input. The only way to determine if there is console input is to do a read (and block until the user types something). For this reason, we always return true for tstc (since you will always get input if you try). However, this behavior can cause problems for code which expects tstc to eventually be empty. In query_console_serial, there is the following construct: /* empty input buffer */ while (tstc()) getchar(); with the current implementation, this effectively turns into an infinite loop. To avoid this, fake tstc by returning false half of the time. This is generally OK because the other common construct looks like do { if (tstc()) process(getchar()); } while (!timeout()); so it's fine if we only read a new character every other loop. This will break things like CYGACC_COMM_IF_GETC_TIMEOUT, but that could be reworked to test on the timeout instead of calling tstc again (and ymodem over semihosted serial is not that useful in the first place). Signed-off-by: Sean Anderson

arm: pxa: Remove CONFIG_CPU_PXA25X

2022-06-06T16:09:12Z

There are no platforms that set this, remove the code. Signed-off-by: Tom Rini

serial: Remove obsolete CONS_INDEX_n Kconfig options

2022-05-24T00:46:06Z

These were only ever implied by sunxi platforms, and that usage has been removed. Current practice is to specify CONFIG_CONS_INDEX in each board's defconfig. Signed-off-by: Samuel Holland Reviewed-by: Tom Rini Signed-off-by: Andre Przywara