diff options
Diffstat (limited to 'recipes-kernel/linux/linux-yocto/generic-drivers/icc/0004-interconnect-qcom-icc-rpm-Check-for-node-specific-ra.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-yocto/generic-drivers/icc/0004-interconnect-qcom-icc-rpm-Check-for-node-specific-ra.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-yocto/generic-drivers/icc/0004-interconnect-qcom-icc-rpm-Check-for-node-specific-ra.patch b/recipes-kernel/linux/linux-yocto/generic-drivers/icc/0004-interconnect-qcom-icc-rpm-Check-for-node-specific-ra.patch new file mode 100644 index 0000000..faee1be --- /dev/null +++ b/recipes-kernel/linux/linux-yocto/generic-drivers/icc/0004-interconnect-qcom-icc-rpm-Check-for-node-specific-ra.patch @@ -0,0 +1,82 @@ +From ba3f826639782587b70a684dae79d39f6d3c433e Mon Sep 17 00:00:00 2001 +From: Konrad Dybcio <konrad.dybcio@linaro.org> +Date: Fri, 25 Aug 2023 17:38:26 +0200 +Subject: [PATCH 4/9] interconnect: qcom: icc-rpm: Check for node-specific rate + coefficients + +Some nodes may have different coefficients than the general values for +bus they're attached to. Check for that and use them if present. See +[1], [2] for reference. + +[1] https://github.com/sonyxperiadev/kernel/commit/7456d9779af9ad6bb9c7ee6f33d5c5a8d3648e24 +[2] https://github.com/artem/android_kernel_sony_msm8996/commit/bf7a8985dcaf0eab5bc2562d2d6775e7e29c0f30 +Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> +Link: https://lore.kernel.org/r/20230726-topic-icc_coeff-v4-4-c04b60caa467@linaro.org +Signed-off-by: Georgi Djakov <djakov@kernel.org> +Upstream-Status: Backport [https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git ba3f82663978] +--- + drivers/interconnect/qcom/icc-rpm.c | 14 ++++++++++---- + drivers/interconnect/qcom/icc-rpm.h | 4 ++++ + 2 files changed, 14 insertions(+), 4 deletions(-) + +diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c +index 1d3af4e9ead8..9c40314e03b5 100644 +--- a/drivers/interconnect/qcom/icc-rpm.c ++++ b/drivers/interconnect/qcom/icc-rpm.c +@@ -300,14 +300,14 @@ static u64 qcom_icc_calc_rate(struct qcom_icc_provider *qp, struct qcom_icc_node + else + agg_avg_rate = qn->sum_avg[ctx]; + +- if (qp->ab_coeff) { +- agg_avg_rate = agg_avg_rate * qp->ab_coeff; ++ if (qn->ab_coeff) { ++ agg_avg_rate = agg_avg_rate * qn->ab_coeff; + agg_avg_rate = div_u64(agg_avg_rate, 100); + } + +- if (qp->ib_coeff) { ++ if (qn->ib_coeff) { + agg_peak_rate = qn->max_peak[ctx] * 100; +- agg_peak_rate = div_u64(qn->max_peak[ctx], qp->ib_coeff); ++ agg_peak_rate = div_u64(qn->max_peak[ctx], qn->ib_coeff); + } else { + agg_peak_rate = qn->max_peak[ctx]; + } +@@ -563,6 +563,12 @@ int qnoc_probe(struct platform_device *pdev) + for (i = 0; i < num_nodes; i++) { + size_t j; + ++ if (!qnodes[i]->ab_coeff) ++ qnodes[i]->ab_coeff = qp->ab_coeff; ++ ++ if (!qnodes[i]->ib_coeff) ++ qnodes[i]->ib_coeff = qp->ib_coeff; ++ + node = icc_node_create(qnodes[i]->id); + if (IS_ERR(node)) { + ret = PTR_ERR(node); +diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h +index 725e0d4840e4..4abf99ce2690 100644 +--- a/drivers/interconnect/qcom/icc-rpm.h ++++ b/drivers/interconnect/qcom/icc-rpm.h +@@ -103,6 +103,8 @@ struct qcom_icc_qos { + * @mas_rpm_id: RPM id for devices that are bus masters + * @slv_rpm_id: RPM id for devices that are bus slaves + * @qos: NoC QoS setting parameters ++ * @ab_coeff: a percentage-based coefficient for compensating the AB calculations ++ * @ib_coeff: an inverse-percentage-based coefficient for compensating the IB calculations + * @bus_clk_rate: a pointer to an array containing bus clock rates in Hz + */ + struct qcom_icc_node { +@@ -118,6 +120,8 @@ struct qcom_icc_node { + int mas_rpm_id; + int slv_rpm_id; + struct qcom_icc_qos qos; ++ u16 ab_coeff; ++ u16 ib_coeff; + u32 bus_clk_rate[QCOM_SMD_RPM_STATE_NUM]; + }; + +-- +2.39.2 + |