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path: root/drivers/interconnect/qcom/qcm2290.c
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2023-10-09interconnect: qcom: qcm2290: Update EBI channel configurationKonrad Dybcio1-1/+2
QCM2290 can support two memory configurations: single-channel, 32-bit wide LPDDR3 @ up to 933MHz (bus clock) or dual-channel, 16-bit wide LPDDR4X @ up to 1804 MHz. The interconnect driver in its current form seems to gravitate towards the first one, however there are no LPDDR3- equipped boards upstream and we still don't have a great way to discern the DDR generations on the kernel side. To make DDR scaling possible on the only currently-supported 2290 board, stick with the LPDDR4X config by default. The side effect on any potential LPDDR3 board would be that the requested bus clock rate is too high (but still capped to the firmware-configured FMAX). Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-7-c04b60caa467@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-10-09interconnect: qcom: qcm2290: Set AB coefficientsKonrad Dybcio1-0/+3
Some buses need additional manual adjustments atop the usual calculations. Fill in the missing coefficients. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-6-c04b60caa467@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-10-09interconnect: qcom: qcm2290: Hook up MAS_APPS_PROC's bus clockKonrad Dybcio1-0/+3
This single node has its own clock which seems to be responsible for transactions between CPUSS (CPU + some stuff) and the GNOC. See [1] for reference. Define it and hook it up. [1] https://android.googlesource.com/kernel/msm-extra/devicetree/+/02f8c342b23c20a5cf967df649814be37a08227c%5E%21/#F0 Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-5-c04b60caa467@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-08-22Merge branch 'icc-qcm2290' into icc-nextGeorgi Djakov1-0/+7
This series contains fixes necessary for icc to behave correctly on QCM2290. * icc-qcm2290 interconnect: qcom: qcm2290: Enable keep_alive on all buses interconnect: qcom: qcm2290: Enable sync state Link: https://lore.kernel.org/r/20230720-topic-qcm2290_icc-v2-0-a2ceb9d3e713@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-08-04interconnect: qcom: qcm2290: Enable sync stateKonrad Dybcio1-0/+1
Enable the generic .sync_state callback to ensure there are no outstanding votes that would waste power. Generally one would need a bunch of interface clocks to access the QoS registers when trying to go over all possible nodes during sync_state, but QCM2290 surprisingly does not seem to require any such handling. Fixes: 1a14b1ac3935 ("interconnect: qcom: Add QCM2290 driver support") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230720-topic-qcm2290_icc-v2-2-a2ceb9d3e713@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-08-04interconnect: qcom: qcm2290: Enable keep_alive on all busesKonrad Dybcio1-0/+6
QCM2290 expects all buses to be up at all times when the CPU is active. Enable keep_alive on all of them to achieve that. Fixes: 1a14b1ac3935 ("interconnect: qcom: Add QCM2290 driver support") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230720-topic-qcm2290_icc-v2-1-a2ceb9d3e713@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-07-16interconnect: Explicitly include correct DT includesRob Herring1-2/+1
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230714174638.4058268-1-robh@kernel.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2023-07-15interconnect: qcom: qcm2290: Hook up RPM bus clk definitionsKonrad Dybcio1-0/+6
Assign the necessary definitions to migrate to the new bus clock handling mechanism. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-16-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: Fold smd-rpm.h into icc-rpm.hKonrad Dybcio1-1/+0
smd-rpm.h is not very useful as-is and both files are always included anyway.. Combine them. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-8-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-07-15interconnect: qcom: Add missing headers in icc-rpm.hKonrad Dybcio1-1/+0
Currently the header does not provide all the required dependencies. Fix it. Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Georgi Djakov <djakov@kernel.org> Link: https://lore.kernel.org/r/20230526-topic-smd_icc-v7-7-09c78c175546@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-03-06interconnect: qcom: qcm2290: Fix MASTER_SNOC_BIMC_NRTKonrad Dybcio1-2/+2
Due to what seems to be a copy-paste error, the _NRT master was identical to the _RT master, which should not be the case.. Fix it using the values available from the downstream kernel [1]. [1] https://android.googlesource.com/kernel/msm-extra/devicetree/+/refs/heads/android-msm-bramble-4.19-android11-qpr1/qcom/scuba-bus.dtsi#127 Fixes: 1a14b1ac3935 ("interconnect: qcom: Add QCM2290 driver support") Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20230103142120.15605-1-konrad.dybcio@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2022-04-23interconnect: qcom: constify icc_node pointersKrzysztof Kozlowski1-6/+6
Pointers to struct qcom_icc_node (and similar structures) are not modified, so they can be made const for safety. The contents of struct qcom_icc_node must stay non-const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220412102623.227607-2-krzysztof.kozlowski@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2022-04-23interconnect: qcom: constify qcom_icc_descKrzysztof Kozlowski1-6/+6
struct qcom_icc_desc is not modified so it can be made const for safety. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220412102623.227607-1-krzysztof.kozlowski@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
2021-12-15interconnect: qcom: Add QCM2290 driver supportShawn Guo1-0/+1363
It adds interconnect driver support for QCM2290 platform. The topology consists of 3 NoCs: BIMC, Config NoC (CNOC) and System NoC (SNOC). SNOC is a QCOM_ICC_QNOC type device, as well as its 3 virtual child devices, QUP, MMNRT and MMRT. QUP is owned by RPM and thus has no .regmap_cfg, while the other 2 share the same .regmap_cfg with SNOC (parent). Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20211215002324.1727-6-shawn.guo@linaro.org Signed-off-by: Georgi Djakov <djakov@kernel.org>
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