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lib: sbi: Add timer frequency to struct sbi_timer_device

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Generic mdelay() and udelay() functions can be provided by the
sbi_timer framework if timer frequency is available in the timer
instance provided by the platform support or timer driver.

This patch adds timer frequency (timer_freq) member in the
struct sbi_timer_device for above purpose.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
This commit is contained in:
Anup Patel 2021-09-14 21:51:48 +05:30 • committed by Anup Patel
parent 72154f4708
commit 12e7af9ab7
10 changed files with 25 additions and 1 deletions
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7
platform/fpga/openpiton/platform.c
View file

@ -26,6 +26,7 @@
#define OPENPITON_DEFAULT_PLIC_NUM_SOURCES 2
#define OPENPITON_DEFAULT_HART_COUNT 3
#define OPENPITON_DEFAULT_CLINT_ADDR 0xfff1020000
#define OPENPITON_DEFAULT_ACLINT_MTIMER_FREQ 1000000
#define OPENPITON_DEFAULT_ACLINT_MSWI_ADDR \
(OPENPITON_DEFAULT_CLINT_ADDR + CLINT_MSWI_OFFSET)
#define OPENPITON_DEFAULT_ACLINT_MTIMER_ADDR \
@ -49,6 +50,7 @@ static struct aclint_mswi_data mswi = {
};
static struct aclint_mtimer_data mtimer = {
.mtime_freq = OPENPITON_DEFAULT_ACLINT_MTIMER_FREQ,
.mtime_addr = OPENPITON_DEFAULT_ACLINT_MTIMER_ADDR +
ACLINT_DEFAULT_MTIME_OFFSET,
.mtime_size = ACLINT_DEFAULT_MTIME_SIZE,
@ -68,6 +70,7 @@ static int openpiton_early_init(bool cold_boot)
void *fdt;
struct platform_uart_data uart_data;
struct plic_data plic_data;
unsigned long aclint_freq;
uint64_t clint_addr;
int rc;
@ -83,6 +86,10 @@ static int openpiton_early_init(bool cold_boot)
if (!rc)
plic = plic_data;
rc = fdt_parse_timebase_frequency(fdt, &aclint_freq);
if (!rc)
mtimer.mtime_freq = aclint_freq;
rc = fdt_parse_compat_addr(fdt, &clint_addr, "riscv,clint0");
if (!rc) {
mswi.addr = clint_addr;