From: Sean Anderson <seanga2@gmail.com>
To: u-boot@lists.denx.de
Subject: [RFC PATCH 12/13] riscv: k210: Increase SPI3 bus clock to CPU speed
Date: Thu, 4 Feb 2021 23:39:22 -0500 [thread overview]
Message-ID: <20210205043924.149504-13-seanga2@gmail.com> (raw)
In-Reply-To: <20210205043924.149504-1-seanga2@gmail.com>
By default the SPI3 bus clock is ~100MHz, 1/4th of the CPU clock. This
causes decreased performance when accessing this peripheral.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
---
arch/riscv/dts/k210.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/riscv/dts/k210.dtsi b/arch/riscv/dts/k210.dtsi
index 81b04018c6..dac7c62289 100644
--- a/arch/riscv/dts/k210.dtsi
+++ b/arch/riscv/dts/k210.dtsi
@@ -600,6 +600,8 @@
interrupts = <4>;
clocks = <&sysclk K210_CLK_SPI3>;
clock-names = "ssi_clk";
+ assigned-clocks = <&sysclk K210_CLK_SPI3>;
+ assigned-clock-rates = <390000000>;
resets = <&sysrst K210_RST_SPI3>;
/* Could possibly go up to 200 MHz */
spi-max-frequency = <100000000>;
--
2.29.2
next prev parent reply other threads:[~2021-02-05 4:39 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 4:39 [RFC PATCH 00/13] spi: dw: Add support for XIP mode Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 01/13] linux err: Synchronize with Linux 5.10 Sean Anderson
2021-02-07 14:37 ` Simon Glass
2021-02-05 4:39 ` [RFC PATCH 02/13] spi-mem: Add dirmap API from Linux Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 03/13] mtd: spi-nor: use spi-mem dirmap API Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 04/13] core: ofnode: Fix inconsistent returns of *_read_u32_array Sean Anderson
2021-02-07 14:37 ` Simon Glass
2021-02-05 4:39 ` [RFC PATCH 05/13] mux: Inline mux functions when CONFIG_MUX is disabled Sean Anderson
2021-02-05 7:32 ` Pratyush Yadav
2021-02-05 4:39 ` [RFC PATCH 06/13] mux: Define a stub for mux_get_by_index if " Sean Anderson
2021-02-05 10:53 ` Pratyush Yadav
2021-02-05 4:39 ` [RFC PATCH 07/13] mux: mmio: Only complain about idle-states if it is malformed Sean Anderson
2021-02-05 11:06 ` Pratyush Yadav
2021-02-05 13:28 ` Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 08/13] spi: dw: Define XIP registers Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 09/13] spi: dw: Add XIP and XIP_CONCURRENT caps Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 10/13] spi: dw: Use a mux to access registers Sean Anderson
2021-02-05 4:39 ` [RFC PATCH 11/13] spi: dw: Add support for DIRMAP Sean Anderson
2021-02-05 4:39 ` Sean Anderson [this message]
2021-02-05 4:39 ` [RFC PATCH 13/13] riscv: k210: Add bindings for SPI XIP Sean Anderson
2021-02-05 4:43 ` [RFC PATCH 00/13] spi: dw: Add support for XIP mode Sean Anderson
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