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bsps/riscv: UART - Read reg-shift from DTB to properly set/get registers

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This commit is contained in:
Hesham Almatary
2019-10-30 09:30:09 +00:00
parent 7ec08391fe
commit 044687d335
1 changed files with 13 additions and 2 deletions
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bsps/riscv/riscv/console/console-config.c
+13 -2
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@@ -161,12 +161,19 @@ static void riscv_console_probe(void)
ns16550_context *ctx;
fdt32_t *val;
int len;
int reg_shift;
ctx = &ns16550_instances[ns16550_devices];
ctx->initial_baud = BSP_CONSOLE_BAUD;
if (RISCV_CONSOLE_IS_COMPATIBLE(compat, compat_len, "ns16750")) {
ctx->has_precision_clock_synthesizer = true;
/* Get register shift property of the UART device */
val = (fdt32_t *) fdt_getprop(fdt, node, "reg-shift", &len);
if (val) {
reg_shift = fdt32_to_cpu(val[0]);
}
if (reg_shift == 2) {
ctx->get_reg = riscv_console_get_reg_32;
ctx->set_reg = riscv_console_set_reg_32;
} else {
@@ -174,6 +181,10 @@ static void riscv_console_probe(void)
ctx->set_reg = riscv_console_set_reg_8;
}
if (RISCV_CONSOLE_IS_COMPATIBLE(compat, compat_len, "ns16750")) {
ctx->has_precision_clock_synthesizer = true;
}
ctx->port = (uintptr_t) riscv_fdt_get_address(fdt, node);
if (ctx->port == 0) {