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path: root/drivers/clk/clk-scpi.c
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2016-08-24clk: scpi: Migrate to clk_hw based OF and registration APIsStephen Boyd1-19/+14
Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-03-02clk: scpi: Remove CLK_IS_ROOTStephen Boyd1-1/+1
This flag is a no-op now. Remove usage of the flag. Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-01-29clk: scpi: Fix checking return value of platform_device_register_simple()Axel Lin1-1/+1
platform_device_register_simple() returns ERR_PTR on error. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-11-30clk: scpi: add missing of_node_putJulia Lawall1-0/+1
for_each_available_child_of_node performs an of_node_get on each iteration, so a break out of the loop requires an of_node_put. The semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ expression root,e; local idexpression child; @@ for_each_available_child_of_node(root, child) { ... when != of_node_put(child) when != e = child ( return child; | + of_node_put(child); ? return ...; ) ... } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-09-28clk: scpi: add support for cpufreq virtual deviceSudeep Holla1-0/+13
The clocks for the CPUs are provided by SCP and are managed by this clock driver. So the cpufreq device needs to be added only after the clock get registered and removed when this driver is unloaded. This patch manages the cpufreq virtual device based on the clock availability. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Mike Turquette <mturquette@baylibre.com> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Jon Medhurst (Tixy) <tixy@linaro.org> Cc: linux-clk@vger.kernel.org
2015-09-28clk: add support for clocks provided by SCP(System Control Processor)Sudeep Holla1-0/+312
On some ARM based systems, a separate Cortex-M based System Control Processor(SCP) provides the overall power, clock, reset and system control. System Control and Power Interface(SCPI) Message Protocol is defined for the communication between the Application Cores(AP) and the SCP. This patch adds support for the clocks provided by SCP using SCPI protocol. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Mike Turquette <mturquette@baylibre.com> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Jon Medhurst (Tixy) <tixy@linaro.org> Cc: linux-clk@vger.kernel.org