Krzysztof Kozlowski
c29f446108
dt-bindings: hwlock: qcom-hwspinlock: add syscon to MSM8974
...
The TCSR_MUTEX region contains two set of registers: mutex and halt.
Add syscon, so the TCSR mutex device (hwspinlock) can use MMIO based
method and in the same time share regmap with other devices for the halt
regs.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org >
Acked-by: Rob Herring <robh@kernel.org >
Tested-by: Luca Weiss <luca@z3ntu.xyz > # fairphone-fp2
Signed-off-by: Bjorn Andersson <andersson@kernel.org >
Link: https://lore.kernel.org/r/20220920150414.637634-2-krzysztof.kozlowski@linaro.org
2022-10-17 17:11:17 -05:00
Krzysztof Kozlowski
276a4f1a5f
dt-bindings: hwlock: qcom-hwspinlock: correct example indentation
...
Use some consistent indentation (4-space) for DTS example.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org >
Acked-by: Rob Herring <robh@kernel.org >
Signed-off-by: Bjorn Andersson <andersson@kernel.org >
Link: https://lore.kernel.org/r/20220909092035.223915-3-krzysztof.kozlowski@linaro.org
2022-09-13 17:01:18 -05:00
Krzysztof Kozlowski
6ca53a75c4
dt-bindings: hwlock: qcom-hwspinlock: add support for MMIO on older SoCs
...
Older Qualcomm SoCs have TCSR mutex registers with 0x80 stride, instead
of 0x1000. Add dedicated compatibles for such case. Unfortunately the
binding started using a generic "qcom,tcsr-mutex" compatible without
specifying the SoC part, thus it looks now quite inconsistent.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org >
Acked-by: Rob Herring <robh@kernel.org >
Signed-off-by: Bjorn Andersson <andersson@kernel.org >
Link: https://lore.kernel.org/r/20220909092035.223915-2-krzysztof.kozlowski@linaro.org
2022-09-13 17:01:18 -05:00
Bjorn Andersson
35efb0e1d5
dt-bindings: hwlock: qcom: Remove invalid binding
...
The Qualcomm hwlock is described in DeviceTree either directly on the
mmio bus or split between a syscon and a mutex node, but as noted in
[1] the latter is not valid DT, so remove any traces of this from the
binding.
[1] https://lore.kernel.org/r/CAL_JsqLa9GBtbgN6aL7AQ=A6V-YRtPgYqh6XgM2kpx532+r4Gg@mail.gmail.com/
Reviewed-by: Rob Herring <robh@kernel.org >
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
Link: https://lore.kernel.org/r/20200729004757.1901107-1-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
2020-08-04 20:21:45 -07:00
Bjorn Andersson
d6a9f0c8f6
dt-bindings: hwlock: qcom: Allow device on mmio bus
...
In modern Qualcomm platforms the mutex region of the TCSR is forked off
into its own block, all with a offset of 0 and stride of 4096, and in
some of these platforms no other registers in this region is accessed
from Linux.
Update the binding to allow the hardware block to be described directly
on the mmio bus, in addition to allowing the existing syscon based
definition for backwards compatibility.
Reviewed-by: Vinod Koul <vkoul@kernel.org >
Reviewed-by: Rob Herring <robh@kernel.org >
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
Link: https://lore.kernel.org/r/20200622075956.171058-3-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
2020-07-13 22:29:24 -07:00
Bjorn Andersson
a7541de9ab
dt-bindings: hwlock: qcom: Migrate binding to YAML
...
Migrate the Qualcomm TCSR mutex binding to YAML to allow validation.
Reviewed-by: Vinod Koul <vkoul@kernel.org >
Reviewed-by: Rob Herring <robh@kernel.org >
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
Link: https://lore.kernel.org/r/20200622075956.171058-2-bjorn.andersson@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org >
2020-07-13 22:29:18 -07:00
