[PATCH] arm: socfpga: stratix10: SPI clock support
From: Dinesh Maniyam dinesh.maniyam@intel.com
This patch is to add SPI clock support for stratix10. Get clock rate function always returning 0 because the DW-SPI driver get the rate from clock node in dts but Stratix10 does not support device tree clock node.To overcome this spi will get the clock_rate directly from spi clock controller override the weaker function.
Signed-off-by: Dinesh Maniyam dinesh.maniyam@intel.com --- arch/arm/mach-socfpga/clock_manager_s10.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-socfpga/clock_manager_s10.c b/arch/arm/mach-socfpga/clock_manager_s10.c index 4b4f0749db..45300336d5 100644 --- a/arch/arm/mach-socfpga/clock_manager_s10.c +++ b/arch/arm/mach-socfpga/clock_manager_s10.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (C) 2016-2018 Intel Corporation <www.intel.com> + * Copyright (C) 2016-2023 Intel Corporation <www.intel.com> * */
@@ -399,6 +399,21 @@ unsigned int cm_get_l4_sys_free_clk_hz(void) return cm_get_l3_main_clk_hz() / 4; }
+/* + * Override weak dw_spi_get_clk implementation in designware_spi.c driver + */ + +int dw_spi_get_clk(struct udevice *bus, ulong *rate) +{ + *rate = cm_get_spi_controller_clk_hz(); + if (!*rate) { + printf("SPI: clock rate is zero"); + return -EINVAL; + } + + return 0; +} + void cm_print_clock_quick_summary(void) { printf("MPU %d kHz\n", (u32)(cm_get_mpu_clk_hz() / 1000));
Hi,
-----Original Message----- From: Maniyam, Dinesh dinesh.maniyam@intel.com Sent: Thursday, December 7, 2023 3:46 PM To: u-boot@lists.denx.de Cc: Marek marex@denx.de; Simon simon.k.r.goldschmidt@gmail.com; Chee, Tien Fong tien.fong.chee@intel.com; Hea, Kok Kiang kok.kiang.hea@intel.com; Maniyam, Dinesh dinesh.maniyam@intel.com; Ng, Boon Khai boon.khai.ng@intel.com; Yuslaimi, Alif Zakuan alif.zakuan.yuslaimi@intel.com; Chong, Teik Heng teik.heng.chong@intel.com; Zamri, Muhammad Hazim Izzat muhammad.hazim.izzat.zamri@intel.com; Lim, Jit Loon jit.loon.lim@intel.com; Tang, Sieu Mun sieu.mun.tang@intel.com Subject: [PATCH] arm: socfpga: stratix10: SPI clock support
From: Dinesh Maniyam dinesh.maniyam@intel.com
This patch is to add SPI clock support for stratix10. Get clock rate function always returning 0 because the DW-SPI driver get the rate from clock node in dts but Stratix10 does not support device tree clock node.To overcome this spi will get the clock_rate directly from spi clock controller override the weaker function.
Signed-off-by: Dinesh Maniyam dinesh.maniyam@intel.com
arch/arm/mach-socfpga/clock_manager_s10.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-socfpga/clock_manager_s10.c b/arch/arm/mach- socfpga/clock_manager_s10.c index 4b4f0749db..45300336d5 100644 --- a/arch/arm/mach-socfpga/clock_manager_s10.c +++ b/arch/arm/mach-socfpga/clock_manager_s10.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 /*
- Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
*/
- Copyright (C) 2016-2023 Intel Corporation <www.intel.com>
@@ -399,6 +399,21 @@ unsigned int cm_get_l4_sys_free_clk_hz(void) return cm_get_l3_main_clk_hz() / 4; }
+/*
- Override weak dw_spi_get_clk implementation in designware_spi.c
+driver */
+int dw_spi_get_clk(struct udevice *bus, ulong *rate) {
- *rate = cm_get_spi_controller_clk_hz();
- if (!*rate) {
printf("SPI: clock rate is zero");return -EINVAL;- }
- return 0;
+}
void cm_print_clock_quick_summary(void) { printf("MPU %d kHz\n", (u32)(cm_get_mpu_clk_hz() / 1000)); -- 2.26.2
Reviewed-by: Tien Fong Chee tien.fong.chee@intel.com
Regards Tien Fong
participants (2)
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Chee, Tien Fong -
dinesh.maniyam＠intel.com