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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Wei Fu This patch add Counter Prescaler support in APM X-Gene RTC driver by getting prescaler (Optional) property value from dtb. This hardware support can only be found in DW_apb_rtc after v2.06a. And adds the optional property "prescaler" in bindings for APM X-Gene RTC. Because the clock source on some platform to RTC is NOT 1HZ, so we need to prescale the clock to make the input clock become 1HZ, like (32K/prescaler) = 1HZ on the XuanTie TH1520 AP sub-system RTC. This patch also add "snps,dw-apb-rtc" into the "compatible". Since XuanTie TH1520 is using the same RTC, so this patch enables APM X-Gene RTC driver for XuanTie TH1520, and add a device node in the XuanTie TH1520 Soc dts: th1520.dtsi. Wei Fu (5): drivers/rtc/rtc-xgene: Add prescaler support in APM X-Gene RTC driver dt-bindings: rtc: Add optional property "prescaler" in APM X-Gene RTC Document drivers/rtc/rtc-xgene: Add "snps,dw-apb-rtc" into the "compatible" Kconfig: Enable APM X-Gene RTC for XuanTie TH1520 riscv: dts: thead: Add XuanTie TH1520 RTC device node .../devicetree/bindings/rtc/xgene-rtc.txt | 16 ++++++++++ arch/riscv/boot/dts/thead/th1520.dtsi | 11 +++++++ drivers/rtc/Kconfig | 12 ++++++- drivers/rtc/rtc-xgene.c | 32 +++++++++++++++++++ 4 files changed, 70 insertions(+), 1 deletion(-) -- 2.44.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv