From: Tero Kristo <kristo@kernel.org>
To: lokeshvutla@ti.com, trini@konsulko.com, u-boot@lists.denx.de
Subject: [PATCHv6 05/26] clk: fixed_rate: add API for directly registering fixed rate clocks
Date: Fri, 11 Jun 2021 11:45:06 +0300 [thread overview]
Message-ID: <20210611084527.7048-6-kristo@kernel.org> (raw)
In-Reply-To: <20210611084527.7048-1-kristo@kernel.org>
From: Tero Kristo <t-kristo@ti.com>
Current driver only supports registering fixed rate clocks from DT. Add
new API which makes it possible to register fixed rate clocks directly
from e.g. platform specific clock drivers.
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
---
drivers/clk/clk_fixed_rate.c | 45 ++++++++++++++++++++++++++++++++++++
include/linux/clk-provider.h | 3 +++
2 files changed, 48 insertions(+)
diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c
index 09f9ef26a4..325a9b2dcf 100644
--- a/drivers/clk/clk_fixed_rate.c
+++ b/drivers/clk/clk_fixed_rate.c
@@ -9,6 +9,9 @@
#include <dm/device-internal.h>
#include <linux/clk-provider.h>
+#define UBOOT_DM_CLK_FIXED_RATE "fixed_rate_clock"
+#define UBOOT_DM_CLK_FIXED_RATE_RAW "fixed_rate_raw_clock"
+
static ulong clk_fixed_rate_get_rate(struct clk *clk)
{
return to_clk_fixed_rate(clk->dev)->fixed_rate;
@@ -40,6 +43,15 @@ void clk_fixed_rate_ofdata_to_plat_(struct udevice *dev,
clk->enable_count = 0;
}
+static ulong clk_fixed_rate_raw_get_rate(struct clk *clk)
+{
+ return container_of(clk, struct clk_fixed_rate, clk)->fixed_rate;
+}
+
+const struct clk_ops clk_fixed_rate_raw_ops = {
+ .get_rate = clk_fixed_rate_raw_get_rate,
+};
+
static int clk_fixed_rate_of_to_plat(struct udevice *dev)
{
clk_fixed_rate_ofdata_to_plat_(dev, to_clk_fixed_rate(dev));
@@ -47,6 +59,32 @@ static int clk_fixed_rate_of_to_plat(struct udevice *dev)
return 0;
}
+#if CONFIG_IS_ENABLED(CLK_CCF)
+struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
+ ulong rate)
+{
+ struct clk *clk;
+ struct clk_fixed_rate *fixed;
+ int ret;
+
+ fixed = kzalloc(sizeof(*fixed), GFP_KERNEL);
+ if (!fixed)
+ return ERR_PTR(-ENOMEM);
+
+ fixed->fixed_rate = rate;
+
+ clk = &fixed->clk;
+
+ ret = clk_register(clk, UBOOT_DM_CLK_FIXED_RATE_RAW, name, NULL);
+ if (ret) {
+ kfree(fixed);
+ return ERR_PTR(ret);
+ }
+
+ return clk;
+}
+#endif
+
static const struct udevice_id clk_fixed_rate_match[] = {
{
.compatible = "fixed-clock",
@@ -63,3 +101,10 @@ U_BOOT_DRIVER(fixed_clock) = {
.ops = &clk_fixed_rate_ops,
.flags = DM_FLAG_PRE_RELOC,
};
+
+U_BOOT_DRIVER(clk_fixed_rate_raw) = {
+ .name = UBOOT_DM_CLK_FIXED_RATE_RAW,
+ .id = UCLASS_CLK,
+ .ops = &clk_fixed_rate_raw_ops,
+ .flags = DM_FLAG_PRE_RELOC,
+};
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 6fda14f5fe..9d296f240a 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -247,6 +247,9 @@ struct clk *clk_register_mux(struct device *dev, const char *name,
void __iomem *reg, u8 shift, u8 width,
u8 clk_mux_flags);
+struct clk *clk_register_fixed_rate(struct device *dev, const char *name,
+ ulong rate);
+
const char *clk_hw_get_name(const struct clk *hw);
ulong clk_generic_get_rate(struct clk *clk);
--
2.17.1
next prev parent reply other threads:[~2021-06-11 8:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 8:45 [PATCHv6 00/26] HSM rearch series for TI K3 devices Tero Kristo
2021-06-11 8:45 ` [PATCHv6 01/26] lib: rational: copy the rational fraction lib routines from Linux Tero Kristo
2021-06-11 8:45 ` [PATCHv6 02/26] arm: mach-k3: introduce new config option for sysfw split Tero Kristo
2021-06-11 8:45 ` [PATCHv6 03/26] remoteproc: k3-r5: remove sysfw PM calls if not supported Tero Kristo
2021-06-11 8:45 ` [PATCHv6 04/26] common: fit: Update board_fit_image_post_process() to pass fit and node_offset Tero Kristo
2021-06-11 8:45 ` Tero Kristo [this message]
2021-06-11 8:45 ` [PATCHv6 06/26] clk: fix clock tree dump to properly dump out every registered clock Tero Kristo
2021-06-11 8:45 ` [PATCHv6 07/26] clk: do not attempt to fetch clock pointer with null device Tero Kristo
2021-06-11 8:45 ` [PATCHv6 08/26] clk: add support for setting clk rate from cmdline Tero Kristo
2021-06-11 8:45 ` [PATCHv6 09/26] clk: sci-clk: fix return value of set_rate Tero Kristo
2021-06-11 8:45 ` [PATCHv6 10/26] clk: fix assigned-clocks to pass with deferring provider Tero Kristo
2021-06-11 8:45 ` [PATCHv6 11/26] clk: fix set_rate to clean up cached rates for the hierarchy Tero Kristo
2021-06-11 8:45 ` [PATCHv6 12/26] clk: add support for TI K3 SoC PLL Tero Kristo
2021-06-11 8:45 ` [PATCHv6 13/26] clk: add support for TI K3 SoC clocks Tero Kristo
2021-06-11 8:45 ` [PATCHv6 14/26] power: domain: Introduce driver for raw TI K3 PDs Tero Kristo
2021-06-11 8:45 ` [PATCHv6 15/26] cmd: ti: pd: Add debug command for K3 power domains Tero Kristo
2021-06-11 8:45 ` [PATCHv6 16/26] tools: k3_fit_atf: add DM binary to the FIT image Tero Kristo
2021-06-11 8:45 ` [PATCHv6 17/26] arm: mach-k3: Add platform data for j721e and j7200 Tero Kristo
2021-06-11 8:45 ` [PATCHv6 18/26] arm: mach-k3: add support for detecting firmware images from FIT Tero Kristo
2021-06-11 8:45 ` [PATCHv6 19/26] arm: mach-k3: do board config for PM only if supported Tero Kristo
2021-06-11 8:45 ` [PATCHv6 20/26] arm: mach-k3: common: Drop main r5 start Tero Kristo
2021-06-11 8:45 ` [PATCHv6 21/26] arm: mach-k3: sysfw-loader: pass boardcfg to sciserver Tero Kristo
2021-06-11 8:45 ` [PATCHv6 22/26] arm: mach-k3: j721e_init: Force early probe of clk-k3 driver Tero Kristo
2021-06-11 8:45 ` [PATCHv6 23/26] configs: j721e_evm_r5: Enable raw access power management features Tero Kristo
2021-06-11 8:45 ` [PATCHv6 24/26] configs: j7200_evm_r5: " Tero Kristo
2021-06-11 8:45 ` [PATCHv6 25/26] board: ti: j72xx: README: update build instructions and image formats Tero Kristo
2021-06-11 8:45 ` [PATCHv6 26/26] arm: dts: k3-j72xx: correct MCU timer1 frequency Tero Kristo
2021-06-11 11:08 ` [PATCHv6 00/26] HSM rearch series for TI K3 devices Lokesh Vutla
2021-06-11 11:18 ` Tero Kristo
2021-06-11 13:43 ` Lokesh Vutla
2021-06-11 14:13 ` Tom Rini
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