[U-Boot] [PATCH v2 0/2] clk: at91: enhance the peripheral clock
The purpose of the patch set is to enhance the peripheral clock to support both at9sam9x5's and at91rm9200's peripheral clock, and align the clk-master's compatibles with kernel's.
Changes in v2: - Use an enum with a descriptive name to denote the clock type. - Add the Reviewed-by tags.
Wenyou Yang (2): clk: at91: enhance the peripheral clock clk: at91: align clk-master's compatibles with kernel's
drivers/clk/at91/clk-master.c | 1 + drivers/clk/at91/clk-peripheral.c | 29 ++++++++++++++++++++++++++--- 2 files changed, 27 insertions(+), 3 deletions(-)
Enhance the peripheral clock to support both at9sam9x5's and at91rm9200's peripheral clock via the different compatibles.
Signed-off-by: Wenyou Yang wenyou.yang@atmel.com Reviewed-by: Simon Glass sjg@chromium.org ---
Changes in v2: - Use an enum with a descriptive name to denote the clock type.
drivers/clk/at91/clk-peripheral.c | 29 ++++++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/at91/clk-peripheral.c b/drivers/clk/at91/clk-peripheral.c index e1ed447133..62fabe304d 100644 --- a/drivers/clk/at91/clk-peripheral.c +++ b/drivers/clk/at91/clk-peripheral.c @@ -16,6 +16,10 @@ #define PERIPHERAL_ID_MAX 31 #define PERIPHERAL_MASK(id) (1 << ((id) & PERIPHERAL_ID_MAX))
+enum periph_clk_type { + CLK_PERIPH_AT91RM9200 = 0, + CLK_PERIPH_AT91SAM9X5, +}; /** * sam9x5_periph_clk_bind() - for the periph clock driver * Recursively bind its children as clk devices. @@ -28,7 +32,14 @@ static int sam9x5_periph_clk_bind(struct udevice *dev) }
static const struct udevice_id sam9x5_periph_clk_match[] = { - { .compatible = "atmel,at91sam9x5-clk-peripheral" }, + { + .compatible = "atmel,at91rm9200-clk-peripheral", + .data = CLK_PERIPH_AT91RM9200, + }, + { + .compatible = "atmel,at91sam9x5-clk-peripheral", + .data = CLK_PERIPH_AT91SAM9X5, + }, {} };
@@ -45,12 +56,24 @@ static int periph_clk_enable(struct clk *clk) { struct pmc_platdata *plat = dev_get_platdata(clk->dev); struct at91_pmc *pmc = plat->reg_base; + enum periph_clk_type clk_type; + void *addr;
if (clk->id < PERIPHERAL_ID_MIN) return -1;
- writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr); - setbits_le32(&pmc->pcr, AT91_PMC_PCR_CMD_WRITE | AT91_PMC_PCR_EN); + clk_type = dev_get_driver_data(dev_get_parent(clk->dev)); + if (clk_type == CLK_PERIPH_AT91RM9200) { + addr = &pmc->pcer; + if (clk->id > PERIPHERAL_ID_MAX) + addr = &pmc->pcer1; + + setbits_le32(addr, PERIPHERAL_MASK(clk->id)); + } else { + writel(clk->id & AT91_PMC_PCR_PID_MASK, &pmc->pcr); + setbits_le32(&pmc->pcr, + AT91_PMC_PCR_CMD_WRITE | AT91_PMC_PCR_EN); + }
return 0; }
Add the compatible "atmel,at91rm9200-clk-master" to align with the kernel's.
Signed-off-by: Wenyou Yang wenyou.yang@atmel.com Reviewed-by: Simon Glass sjg@chromium.org ---
Changes in v2: - Add the Reviewed-by tags.
drivers/clk/at91/clk-master.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c index 284b248271..72d0a739f1 100644 --- a/drivers/clk/at91/clk-master.c +++ b/drivers/clk/at91/clk-master.c @@ -21,6 +21,7 @@ static struct clk_ops at91_master_clk_ops = { };
static const struct udevice_id at91_master_clk_match[] = { + { .compatible = "atmel,at91rm9200-clk-master" }, { .compatible = "atmel,at91sam9x5-clk-master" }, {} };
participants (1)
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Wenyou Yang